Questions Asked on
January 31, 2012

  1. Chemistry

    CCl3F boils at 23.8 degrees Celcius, and its molar heat of vaporization is 24.8 kJ/mol. Calculate the molar entropy of vaporization of CCl3F (l)

    asked by Kay
  2. physics

    A coin is placed on a vinyl stereo record that is making 33 1/3 revolutions per minute on a turntable. In what direction is the acceleration of the coin? Find the magnitude of the acceleration when the coin is placed 18 cm from the center of the record.

    asked by colleen
  3. physics

    A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.1 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the roof of the

    asked by chelsea
  4. Physics net force and mass

    Four boxes of various masses are placed on a friction free table. Rank these boxes according to net force by listing them in order from greatest to least. A) B) C) D) Thank You :) (the |_ kg | are the boxes) =)

    asked by Jill
  5. Math

    When is a wrestler "king of the ring"?

    asked by Anonymous
  6. chemistry

    A 141-mg sample was placed on a watch glass that weighed 9.203 g. What is the weight of the watch glass and sample in grams?

    asked by eric
  7. Physics

    Karen has a mass of 62.60 kg and she rides the up escalator at Woodley Park Station of the Washington D.C. Metro. Karen rode a distance of 62 m, the longest escalator in the free world. How much work did the escalator do on Karen if it has an inclination

    asked by Ethan
  8. Calculus

    Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the? Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about y = 8. 27y = x^3, y = 0,

    asked by John
  9. trig

    The terminal side of θ lies on a given line in the specified quadrant. Find the values of the six trigonometric functions of θ by finding a point on the line. Line: (55/48)x Quadrant:III sin(θ)= cos(θ)= tan(θ)= csc(θ)= sec(θ)= cot(θ)=

    asked by andrea
  10. QUANTS

    Suppose you are going on a weekend trip to a city that is d miles away. Develop a model that determines your round-trip gasoline costs?

    asked by VEE
  11. chem grade 12

    Consider the following substance: Al2(SO4)3 What is the oxidation number of: a) aluminum b) sulfur c)oxygen

    asked by sam
  12. trig

    how can we find the value of sin -720

    asked by deeepika
  13. Engineering/Chemistry

    Milk is flowing through a heat exchanger at a rate of 2000kg/h. he heat exchanger supplies 111,600kJ/h. The outlet temperature of the product is 95C. Determine the inlet temperature of the milk. The product specific heat is 3.9kJ/(kg*C)

    asked by Janice
  14. Business

    I want to retire in 20 years. I think that I need $500,000. I have $200,000 set aside right now. If I earn 5.25%, will I have enough? How much do I need to have today in order to achieve that?

    asked by Rene
  15. chemistry

    The Ka value for HCN is 4.9x10^-10. What is the value of Kb for CN-?

    asked by mary
  16. chemistry

    A piper delivers 10.04, 10.02, 10.08, and 10.06 mL in consecutive trails. Find the mean volume and the average deviation from the mean...please help some responded but didn't answer the question.

    asked by Lisa
  17. chemistry

    A patient has 0.050 L of blood drawn and this volume of blood has a mass of 55.0 g. What is the density of the blood? Answer with the correct number of sig figs

    asked by k
  18. Physics

    You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 5.20 m/s, directed downward, and it hits the ground 2.10 s after it is released. Find the height of the balcony.

    asked by Haze
  19. English

    I have to write a conversation between two characters from Groom Service by Michael Dorris(shot story)Is there is anyone who had read this story and wrote dialouge fot it? Please help :(

    asked by Sarah
  20. Physics

    A boy tosses a football upward. If the football rises a vertical distance of 1.3 m and the boy catches it at the same point he released it, what is the velocity of the ball just before he catches it?

    asked by Haze
  21. math

    a group of 9 people spent $78 to go to the movies.adult tickets cost$10 each and student tickets cost $8 each.How many adult tickets were purchased?

    asked by zack
  22. Math

    A farmer has 80 feet of fencing, which she plans to use to fence in a plot of land for a pigpen. If she chooses to enclose a plot along the broad side of her barn, what is the largest area that can be enclosed? (Note: The side along the barn will not

    asked by Chelsea
  23. physics.

    When temperature changes during the day, which scale, Celsius or Fahrenheit, will read a smaller change? and why?

    asked by anonymous
  24. physics

    A motorcycle traveling 91.0 km/hr approaches a car traveling in the same direction at 83.0 km/hr. When the motorcycle is 52.0 m behind the car, the rider accelerates and passes the car 16.0 s later. What is the acceleration of the motorcycle (in

    asked by challom
  25. math

    abbi invested 1,500 dollars in a certificate of deposit with a simple interest rate of 4 percent. find the interest earned in 6 years. then find the total of principal plus interest

    asked by iconiac and a granderz fan
  26. Chemistry

    Is (NH4)2 CO3 ionic or covalent?

    asked by S
  27. chemistry

    How much heat (in ) is required to warm 11.0 of ice, initially at -13.0, to steam at 111.0? The heat capacity of ice is 2.09 and that of steam is 2.01

    asked by Anonymous
  28. physics

    Three ants are sitting on the vertices of equilateral triangle of side a. At t=0 and ant 1 starts approaching ant 2 with a speed v ,ant 2 starts approaching ant 3 with a speed v, and ant 3 starts approaching ant 1 with speed v.The three ants meet at the

    asked by priyasharma
  29. chemistry

    Aluminum reacts with hydrochloric acid to produce aluminum chloride and hydrogen gas. What mass of hydrochloric acid reacts when 87.7 grams of aluminum dissolves? The equation is 2Al+6HCl=2AlCl3+3H2

    asked by Kendall
  30. Trugonometry

    Simplify the expression √x2 +1 as much as possible after substituting tan(θ) for x.

    asked by Courtney
  31. Chemistry

    If you are using 5.25% (mass/mass) bleach solution and you determine that the density of the bleach solution is 1.08 g/mL, how many moles of sodium hypochlorite are present in a 4.00 mL sample?

    asked by Rob
  32. Physics

    A long, straight wire has a uniform linear charge density of 7.50X10^-4 C/m. A point charge q=15.0 microcoulombs is located 4.50 cm away from the wire. Find the magnitude of the force exerted by the charge q on the wire.

    asked by Angelo
  33. math

    10 friends share 7 dollars,what is the fraction?

    asked by John
  34. chem

    the RDA of the amino acid lysine is 12 mg per kg of body weight. How many grams per day should a 77.0 kg adult receive?

    asked by lou
  35. Physics

    A long, straight wire has a uniform linear charge density of 7.50X10^-4 C/m. A point charge q=15.0 microcoulombs is located 4.50 cm away from the wire. Find the magnitude of the force exerted by the charge q on the wire.

    asked by Angelo
  36. chemistry

    At 20 °C, chloroform (CHCl3) has a density of 1.489 g/mL. What is the mass of 7.52 mL of chloroform at 20°C?

    asked by katie
  37. geometry

    Point C is the center of the circle. The measure of angle ACB is 15x + 20. Arc AB measures 20x – 10. Find the measure of arc AB.

    asked by kadejah
  38. math geometry help

    learning geometry i need to determine whether each pair of figures is similar. and explain why or why not: since I cant draw can you help me with this pls im so lost. 1) triangle xyz

    asked by marko
  39. Physics

    How long does it take light traveling from the sun at 3.0 x 10^8 m/s to reach Jupiter, which is 780 x 10^6 km away?

    asked by Elizabeth
  40. chemistry

    if 3.60g of NaCl is dissolved into 75.00mL of water, what is the concentration of this salt solution, in m/v%?

    asked by john
  41. Physic

    Two charges of equal magnitude of 2C and mass of 1.0 g are separated by a distance of 3 mm. Find the velocity of one particle when they are separated by a distance of 4mm.

    asked by Catherine
  42. arithmetic

    The sum of the first 10th term of an a.p is 255,the sum of the first 20 term is 1010.find the next 2020 term of the progression

    asked by Daniel
  43. geometry

    You are wrapping a gift box that is 15 inches long, 12 inches wide, and 4 inches deep. Use a net to find the length and width of a single sheet of paper that could be used to wrap the entire gift box.

    asked by Cheyenne Smith
  44. Precalculus

    When a projectile leaves a starting point at an angle of elevation of theta with a velocity v, the horizontal distance it travels is determined by: d=v^2/(32) sin2theta Where d is measured in feet and v in feet per second. An outfielder throws the ball at

    asked by jake-@Reiny
  45. ALGEBRA 2

    Use the Rational Root Theorem to list all possible rational roots for each equation. Then find any actual roots. x^3 + 2x^2 + 3x + 6 = 0 (8 points)

    asked by help pleaseeeee!!!!
  46. Math-Statistics-please doublecheck my answers

    In the fall of 2000, 54% of the almost 34,000 first-year students attending one of the California State Universities had strong enough math skills to take an entry level course. 1)Based on a sample of 20 students, can we assume our calculations will be

    asked by Mandy
  47. Physical Science

    The string of a certain yo-yo is 80 cm long and will break when the force on it is 10 N. What is the highest speed the 200 g yo-yo can have when it is being whirled in a circle? Ignore the gravitational pull of the earth on the yo-yo.

    asked by Kristen
  48. chemistry

    A kitten's normal body temperature is 102ºF. Express this temperature in ºC.

    asked by kr
  49. Physics

    A beam of electrons traveling with a speed of 3.00 x 107 m/s enters a uniform, downward electric field of magnitude 1.17 x 104 N/C between the deflection plates of an oscilloscope (the figure below ). The initial velocity of the electrons is perpendicular

    asked by Ashley
  50. Physics

    A plane is flying west at 214 km/h. The wind is blowing south at 108km/h. a what is the ground speed of the plane b In what direction does the plane travel

    asked by Shekinah
  51. physics

    A falling stone takes 0.320 s to pass a window 2.30 m high. From what height (in meters) above the top of the window did the stone fall?

    asked by jholm
  52. CHEMISTRY

    1) An NaOH solution of unknown concentration is titrated with HCl. 51.9 mL of 0.400 mol/L HCl will neutralize 75.0 mL of the NaOH. What is the concentration of the NaOH solution ? Record your answer in decimal notation. I think the answer is 0.277 mol/L.

    asked by TIANDRA
  53. Chemistry

    The following reaction has the following standard thermodynamic parameters: Reaction: C(g) + D(g)----> E(g) Delta H rxn=-26.1kJ/mol and Delta S rxn=-69.8J/(mol*K). Calculate the temperature at which the reaction becomes nonspontaneous.

    asked by Kay
  54. geometry

    A cube with edges inch long is shown below. What is the length, in inches, of a diagonal that runs from one corner of the cube to the opposite corner?

    asked by shirley
  55. calculus

    Find the equation of the tangent line to the curve y=sqrt(x) at x = c. Put the answer in slope intercept form y=mx+b. Use the definition of the slope of the tangent with no short cuts.

    asked by jon
  56. social studies

    What did the United States gain from the War of 1812?

    asked by stephanie
  57. physics

    suppose the you push with a 40-N horizontal force on a 4-kg mass resting on a horizontal surface against a horizontal friction force of 24N. show that the acceleration is 4 m/s2

    asked by Anonymous
  58. GEOMETRY PLS HELP

    learning geometry i need to determine whether each pair of figures is similar. and explain why or why not: since I cant draw can you help me with this pls im so lost. 1) triangle xyz

    asked by marko
  59. physics

    A kangaroo jumps to a vertical height of 242 cm. How long (in seconds) was the kangaroo in the air?

    asked by jholm
  60. Physics

    Two parallel plates are 4.85 cm apart. The bottom plate is charged positively and the top plate is charged negatively, producing a uniform electric field of 5.51 x 104 N/C in the region between the plates. What is the time required for an electron, which

    asked by Ashley
  61. Physics

    High-voltage power lines are a familiar sight throughout the country. The aluminum (resistivity = 2.82 x 10-8 m) wire used for some of these lines has a cross-sectional area of 4.4 x 10-4 m2. What is the resistance of 12 kilometers of this wire?

    asked by Morgan
  62. Chemistry

    The following reaction has the following standard thermodynamic parameters: Reaction: C(g) + D(g)----> E(g) Delta H rxn=-26.1kJ/mol and Delta S rxn=-69.8J/(mol*K). Calculate the temperature at which the reaction becomes nonspontaneous.

    asked by Kay
  63. Math

    If teacher x gives a pop quiz on Monday and then every five classes, and teacher y gives a pop quiz on Monday and then every six days, how many school days will it be until both give quizzes on the same school day

    asked by Teresa
  64. Chemistry

    If you are using 5.25% (mass/mass) bleach solution and you determine that the density of the bleach solution is 1.08 g/mL, how many moles of sodium hypochlorite are present in a 4.00 mL sample?

    asked by Rob
  65. economics

    Which of the following is a FALSE statement? A. Changes in the price of inputs can cause a shift in supply. B. If the price of other goods change, it can cause a shift in supply. C. Government involvement in the economy will not cause a shift in supply. D.

    asked by lalt
  66. college alg

    A particular style of shoes costs the dealer $97 per pair. At what price should the dealer mark them so he can sell them at a 10% discount off the selling price and still make a 30%profit?

    asked by love
  67. science

    Imagine that you are the scientist who discovered cells. If you were to give a speech to a group of fellow scientists, what key points would you include that describe your accomplishments? What are some that would help?

    asked by 12-year-old-poet
  68. physics

    Charges of +2.38 nC and -1.06 nC are located at opposite corners, A and C, respectively, of a square which is L = 1.13 m on a side (as shown in the figure below ). What is the electric potential at a third corner, B, of the square (where there is no

    asked by Ashley
  69. MATH WORD PROBLEM

    MEASUREMENT: A woman is 5 ft tall and her shadow is 4ft long a nearby tree has a shadow 30 ft long. how tall is the tree? my answer i got was; 37.5 ft is that right? a man is standing near a totem pole. the man is 74 in tall. his shadow is 4ft long. the

    asked by marko
  70. Physics

    A van de Graaff generator has a metal sphere of radius 14.2 cm. To what potential can it be charged before the electric field at its surface exceeds 2.01 x 106 N/C (which is sufficient to break down dry air and initiate a spark)?

    asked by Ashley
  71. sociology please help asap

    i have to write three pages on this topic i need ideas. PLEASE Peter Berger likens sociological discovery to culture shock minus geographical displacement. He also points out that as a sociologist we must peel away the layers of the

    asked by gabby
  72. Math

    The sticker price of car is $15,800. If the sales tax is 8% what is the total cost? Show working

    asked by Devon
  73. Physics

    An 845-N sled is pulled a distance of 190 m. The task requires 1.70 104 J of work and is done by pulling on a rope with a force of 124 N. At what angle is the rope held?

    asked by Ethan
  74. algebra

    a woodworking project calls for three pieces. the longest piece is twicw the length of the middle-sized piece, and the shortest is 10 inches shorther than the middle-sized piece. the board os 70 inches. how much must each peice be?

    asked by teesha
  75. Math

    Factor the polynomial as the product of factors that are irreducible over the real numbers. Then write the polynomial in completely factored form involving complex nonreal or imaginary numbers. x^4 + 20x^2 -44=0

    asked by Chelsea
  76. trig

    starting salary for a job is 30,000 with a guaranteed raise of $5,000 each year for the first 5 years. write an explicit formula to represent how much money you would earn each year. how much money would you earn in the fifth year?

    asked by lisa
  77. trig

    If A=55 degrees 55 minutes and c=16, find a.

    asked by Zamaria
  78. Physics

    Suppose a car is traveling at 14.0 m/s, and the driver sees a traffic light turn red. After 0.500 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 5.00 m/s2. What is the stopping distance of the car, as measured

    asked by Anonymous
  79. chemistry

    For each solution whose pH value deviated from 7.0 by at least 1.0 pH unit, give an equation accompanied by a statement which gives the reasons and/or explanation for the deviation. pH values: NaCl 6.89 NaC2H3O2 7.75 Na2CO3 11.20 Cu(NO3)3 4.73 NH4Cl 5.91

    asked by mary
  80. Thermodynamics

    Streptomycin, an antibiotic, is produced on a large scale in the United States. The purified solution contains 50 wt% streptomycin water. Preparation of 500 mL intravenous (IV) drip solution bag requires addition of diluent and preservative. The diluent

    asked by debbie
  81. chemistry

    Determine the boiling point of water at 698.5 mm Hg.

    asked by Lisa
  82. physics

    A golf ball rolls off a horizontal cliff with an initial speed of 14.1 m/s. The ball falls a vertical distance of 14.0 m into a lake below. (a) How much time does the ball spend in the air? (b) What is the speed v of the ball just before it strikes the

    asked by chelsea
  83. science

    Runner A is initially 5.0 km west of a flagpole and is running with a constant velocity of 4.5 km/h due east. Runner B is initially 7.0 km east of the flagpole and is running with a constant velocity of 6.5 km/h due west. How far are the runners from the

    asked by Anna
  84. physics

    A charge of +1.96 mC is located at x = 0, y = 0 and a charge of -3.92 mC is located at x = 0, y = 2.85 m. What is the electric potential due to these charges at a point with coordinates x = 4.01 m, y = 0?

    asked by Ashley
  85. PHYSICS

    A ball is thrown from a point 1.1 m above the ground. The initial velocity is 20.3 m/s at an angle of 32.0° above the horizontal. (a) Find the maximum height of the ball above the ground??? (b) Calculate the speed of the ball at the highest point in the

    asked by Anonymous
  86. probability

    There is a .97 chance that no accident will occur during any particular day at a racetrack of local importance. the probability of one accident a day is .02, and the probability of two accidents is .01. a. What is the expected number of accidents in a day?

    asked by 12-year-old-poet
  87. Math

    Rubber stripping for a trailer needs to be exactly 2.93 meters long. About how many of these pieces can be cut from a 12-meter length of rubber stripping? Estimate by using compatible numbers.

    asked by Arianna
  88. algebra

    find x and y 5x-3y=-4 3x+2y=9

    asked by tanya
  89. alg2\trig

    a colony of 300 bacteria doubles each day. write an explicit formula to determine how many bacteria there would be on the nth day. how would you do this?

    asked by jessica
  90. math

    Lareina understands factors, but sometimes she has trouble finding all the factors of a number. What advice would you give to help her find all the factors of a number? Demonstrate by finding all the factors of 110. I NEED HELPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!

    asked by Gabby ( 5 grade)
  91. 8th grade math

    1. The area shown below will be used for the elementary school playground. What is this area? How much fencing is needed to enclose the playground? Use 3.14 for the value of pi. d= 4 yds for the half circle, w=10 yds. for width of rectangle, and length = 4

    asked by Anonymous
  92. Chemistry - thanks

    In a thin layer chromatography (TLC)experiment,the TLC plate was pre-developed in the development chamber containing the mobile phase (to remove any contaminants before use),then air dried. On the same day,the TLC plate was then spotted with the sample &

    asked by Anne
  93. science

    if a globe has a diameter of 0.5 meters write the globes scale as a ratio. What distance on earth would 1 centimeter on a globe represent

    asked by Jordyn
  94. chemistry

    Find the mass of urea needed to prepare 51.7 g of a solution in water in which the mole fraction of urea is 7.59×10−2. anyone have the same values?

    asked by jazz
  95. English

    I left out the following sentences.Thank you very much. 1) The day after Christmas my uncles from Liguria visited us. 2) The day after their visit I started my homework and I did't manage to finish it before the beginning of the school. 3) On 30 December I

    asked by Henry2
  96. physics

    Find the electric potential energy for the following array of charges: charge q1 = +3.0 µC is located at (x, y) = (0.0, 0.0) m; charge q2 = +3.0 µC is located at (4.0, 3.0) m; and charge q3 = −1.0 µC is located at (0.0, 3.0) m.

    asked by anybody?
  97. english 114

    can anyone please help me? I am having to write an essay on Protecting Freedom of Expression by Derek Bok ,I have come up with a thesis but my teacher says no can some one help me with a arguemental thesis. new thesis how does this sound? Thesis: Using

    asked by sharon
  98. Physics

    A particle is initially moving along the positive x-axis at a speed of 9.90 m/s. After 2.40 s, the particle is moving along the negative y-axis at a speed of 4.71 m/s. Find the x and y components of the particle's acceleration.

    asked by Hanna
  99. biology

    How does an observation about an object differ from an inference about that object. I Really need help on biology Thank you

    asked by glenn help help help
  100. psychology

    Why is Pseudo-psychologies so popular?

    asked by Lannette
  101. geometry/algebra

    at 5pm a person 5 feet tall casts a 10 foot shadow. at the same time a flagpole casts a 40 foot shadow. what is the height of the flagpole?

    asked by sarah
  102. science

    How much work is done by an applied force that moves two charges of +7.8 µC that are initially very far apart to a distance of 3.8 cm apart

    asked by Andrew
  103. Physics

    Charges of -10.8 nC and -24.2 nC are separated by 0.813 m. What is the potential midway between the two charges?

    asked by Ashley
  104. Chem 11

    Calculate the miles of potassium hydrogen phthalate in your weighed sample. Potassium hydrogen phthalate : 4.0759g

    asked by Anonymous
  105. math

    march madness is a tournament of the top 64 NVAA basketball teams. at the end of each round there are half as many teams as there were the previous round. there are 6 rounds total. at the end of the tournament, how many games have been played?

    asked by dianela
  106. Math

    When Jill woke up in the morning, the outdoor temperature was 3 degrees below zero. What integer represents the temperature?

    asked by Isaiah
  107. Math

    I don't understand this quadratic equation: The ratio of the measures of the length and width of a rectangle is 5:7. the area of the rectangle is 1,715 square feet. Find the dimensions of the rectangle.

    asked by Elizabeth
  108. math

    estimating products writing to explain .each video game at an arcade requires 375 tokens. tom has 2,000 tokens . he said he can play 6 games. is he correct ? explain.

    asked by carla
  109. Culturally Diverse Backgrounds

    a young Asian child would probably be less engage in backchanneling than a middle class American child does because?

    asked by rhonda minnis
  110. Chemistry

    Which compound below would be expected to have the highest boiling point? a) CH3-CH2-CH2-CH2-CH2-CH2-CH3 b) CH3-CH2-CH2-CH2-CH-CH3 | CH3 c) CH3-CH-CH2-CH-CH3 | | CH3 CH3 d) CH3 | CH3-CH-C-CH3 | | CH3 CH3 I think its A?

    asked by Sam
  111. Chemistry

    Three factors control the rate of evaporation of a liquid: surface area, temperature, and strengths of intermolecular forces. More than one of the statements given described a correct effect. The statements are (1) the larger the surface area, the faster

    asked by Anna King
  112. math

    Suppose a bag of marbles has 4 green, 2 red, 5 yellow, 1 brown, and 7 blue marbles. What is the probability of picking a green marble, replacing it, and then picking a brown marble?

    asked by Nick
  113. psy

    A study wants to examine the relationship between student anxiety for an exam and the number of hours studied. The data is as follows: Student Anxiety Scores Study Hours 5 1 10 6 5 2 11 8 12 5 4 1 3 4 2 6 6 5 1 2 Why is a correlation the most appropriate

    asked by Nicole
  114. chemistry

    For the balanced equation shown below, how many grams of O2 reacted, if 98.0 grams of HCl are produced? 2C6H4Cl2+7O2=>12CO+2H2O+4HCl

    asked by Alen Maslo
  115. chemistry

    Suppose that 1.78 x 10^3 kg of Fe are obtained from a 5.80 x 10^3 kg sample of Fe2O3. Assuming that the reaction goes to completion, what is the percent purity of Fe2O3 in the original sample?

    asked by Joe
  116. engineering science

    A 250 cc motorbike must accelerate from rest to 126 km/h in 150 m in 10 seconds. Draw a velocity/time graph of the movement. (Hint: change km/h to m/s

    asked by kabelo
  117. engineering science

    If a person has a mass of 83 kg, what will that person weigh in newton

    asked by kabelo
  118. chemistry

    Zenapax® is used as part of immunosuppressive therapy for transplant patients. The dosage is calculated on the basis of 1.0 mg/kg. What is the proper dose for a 175 lb patient? (Given: 1kg = 2.205 lbs)

    asked by kr
  119. math

    Determine the extension amount of the following order: Product X: 10 units @ $2.35 each Product Y: 12 boxes @ $6.15 per box Product Z: 3 dozen @ $12.20 per dozen (Points: 5) $20.70 $133.90 $172.50 $536.50

    asked by T.
  120. organic chemistry

    An unknown H2So4 sample of 25.00mL vl is titrated with 0.149 M NaOH. If 45.22mL of NaOH were needed to reach the pink endpoint, what was the molarity of the unknown acid? Show work using conversion factors????? H2SO+2NaOH --> Na2SO4+2H2O Dont know where or

    asked by April
  121. Physical Science

    A man has a mass of 70 kg. A) What would his weight be on Jupiter which as an acceleration of gravity of 25m/s^2? B) What would the mass of a person have to be in order for him to weigh that amount on earth?

    asked by Kristen
  122. PHYSICS

    A tennis ball is thrown horizontally from an elevation of 20.60 m above the ground with a speed of 21.0 m/s vertical m from ground??? f the ball is still in the air, how long before it hits the ground? (If the ball is not in the air, enter 0.)???? If the

    asked by Anonymous
  123. statistics

    the distribution of scores on a test is mound shaped and dsymmetric with a mean score of 78. if 68 percent of the scores fall between 72 and 84, what is the stand deviaition

    asked by Josh
  124. Comm 100

    What statements is true concnerning cultural context/ It involes verbal clues only It is about globalizaiton It is communicated primarily thorugh environment and nonverbal clues

    asked by Amanda
  125. Math

    Merchandise lists for $5,000 with a trade discount of 10% and terms of 5/30, 3/60, n/90. If the purchaser is invoiced on April 12th and payment is made on June 10th, what is the actual amount paid? (Points: 5) $4,275 $4,350 $4,365 $4,500

    asked by T.
  126. sociology a 3 page paper

    C Wright Mills introduces the sociological imagination as both a worldview and the pre-requisite of sociological inquiry. He states that the sociological imagination connects history to biography. What does he mean by this? Additionally, explain the

    asked by kay
  127. math

    A retailer wants to sell an item that costs $18 at a list price that will provide a 25% markup on the selling price and give the customer a 40% discount. What is the list price? (Points: 5) $20.16 $24.00 $31.50 $40.00

    asked by T.
  128. trig

    Prove (1+secx)/(tanx+sinx)=cscx

    asked by Matt
  129. chemistry

    The energy levels the electron can occupy in the He+ ion can be calculated using the energy level equation. Calculate the frequency (Hz) of the photon emitted when the electron goes from a n= 4.00 energy level to a n= 3 energy level. Express answer in

    asked by tammy
  130. chemistry

    determine the i value for kcl solution

    asked by mint
  131. Biology

    Give the sequence of a reverse primer used to insert a BamHI site (GGATCC) at the 3' end of the following sequence: 5' CTGAACGTCCAAGGCTTAA 3' 3' GACTTGCAGGTTCCGAATT 5' Make sure you indicate your primers polarity.

    asked by Peter Parker
  132. Math

    Eva gives out two sheets of paper to each 30 students. She gives paper to 19 students and has to get more. Howany more sheets of paper does he need?

    asked by Evie
  133. English

    Hello. I will really appreciate some help from a native speaker of English. Which is correct, "this" or "that",(maybe, both?)in the following context: 1)He signed this/that (?) contract last week. 2)This/that(?)letter was prepared yesterday. Do "past"

    asked by Ilma
  134. college algebra

    Please show me how to work this e^.05t =1600

    asked by Betty
  135. Probability

    If a bag contains 2 square, 4 triangles, and 4 circles, what is the probability of picking a square on the first draw from the bag?

    asked by Red
  136. economics

    What is the main difference between macroeconomics and microeconomics?

    asked by lalt
  137. chemistry

    At 22 degrees Celsius and a pressure of 755 mm Hg, an unknown gas was found to have a density of 4.52 g/L. When analyzed, the gas was found to consist of two elements: Boron at 78.1% and Hydrogen at 21.9%. What is the molecular formula of this unknown gas?

    asked by tom
  138. Physics

    A diver springs upward from a board that is 4.10 m above the water. At the instant she contacts the water her speed is 11.9 m/s and her body makes an angle of 79.7 ° with respect to the horizontal surface of the water. Determine her initial velocity, both

    asked by Alex
  139. calculus

    I don't know if I'm typing it in wrong into my graphing calculator but I need to estimate the limits of sin(8 theta) / theta

    asked by sara
  140. college algebra

    Students in an English class took a final exam. They took equivalent forms of the exam at monthly intervals thereafter. The average score S(t), in percent, after t months was found to be given by S(t) = 68 - 20 log (t+1), t > 0

    asked by Betty
  141. math

    If an injectable drug contains 25mcg/0.5ml, how many mls will be required to provide a patient with a dose of 0.25mg?

    asked by Vicki
  142. math

    Norman received $60 for working 8 hours. At this rate, how much would receive for working 35 hours?

    asked by Kara
  143. English

    I urgently need you to revise these sentences. Thank you very much! 1) On my first days of holiday I read a book, tidied my room and helped my mum to make buiscuits for all our family. 2) On Christmas Eve I went to the gym to do my callisthenics practice.

    asked by Henry2
  144. Math

    An inherited trait that helps an organism survive and reproduce is called A. an adaption B. a species C. an evironment D. a niche A? 2. Which best describes the way structural adaptions occur? A. quickly in a shor period of time B. slowly over thousands of

    asked by Brayden
  145. Algebra 2

    How do you simplify this expression 3/4(20a+12)+1/4(20a+12)

    asked by Rhyneakqua
  146. Chemistry

    Which compound below would be expected to have the highest boiling point? a) CH3-CH2-CH2-CH2-CH2-CH2-CH3 b) CH3-CH2-CH2-CH2-CH-CH3 | CH3 c) CH3-CH-CH2-CH-CH3 | | CH3 CH3 d) CH3 | CH3-CH-C-CH3 | | CH3 CH3 I think its A?

    asked by Sam
  147. Chemistry

    Which compound below would be expected to have the highest boiling point? a) CH3-CH2-CH2-CH2-CH2-CH2-CH3 b) CH3-CH2-CH2-CH2-CH-CH3 | CH3 c) CH3-CH-CH2-CH-CH3 | | CH3 CH3 d) CH3 | CH3-CH-C-CH3 | | CH3 CH3 I think its A?

    asked by Sam
  148. trig and algerba

    6+7(t - 1) = 5(t + 7) + 8 what does t equal

    asked by Anonymous
  149. Precalculus

    Solve for x, 0

    asked by jake
  150. math

    The product of two consecutive intergers is 56. Find the intergers.

    asked by Annie
  151. math

    kevin says that 22 over 30 is greater than 22 over 32.Do you agree?Explain.

    asked by Nina
  152. Physics

    Capacitors are used in many applications where you need to supply a short burst of energy. A 143 μF capacitor in an electronic flash lamp supplies an average power of 12.6 kW to the lamp for 2.95 ms. To what potential difference must the capacitor

    asked by Ashley
  153. calculus

    If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?

    asked by Anonymous
  154. Chemistry

    The order of the boiling points for the hydrogen halides, except for HF, is HI > HBr > HCl. The reason for this order can be attributed to a) the relative covalent bond strengths. b) differences in hydrogen bonding. c) differences in dipole-dipole

    asked by Ashley
  155. Chemistry

    suppose a 1.50 kg object is suspended from the end of a silicone band. when the object is pulled down and released, the band vibrates at a frequency of 2.08 s-1. calculate the spring constant of this silicone band including units.

    asked by Kyle
  156. Math

    The product of two consecutive odd intergers is 143. Find the intergers.

    asked by Jessica
  157. Math- Algebra

    Bikes, Trikes and more At Brittany's Bike shop, she rents all kinds of cycles: unicycles, tandems, regular bikes, and even tricycles. She parks all the cycles in front of her shop with a helmet for each rider strapped to the cycles. This morning Brittany

    asked by zachary stanich
  158. biology

    If I had an experiment where I was testing how the membrane permeability is affected by ethanol, and by doing this had to observe thin onion slides with different ethanol concentrations and had to count how many nuclei were seen through the microscope once

    asked by anonymous
  159. english

    I really need someone to help with errors. Teenagers and Driving: A Dangerous Combination Teenagers and vehicles can be a very dangerous combination. Teenage drivers are four times more likely to be involved in a motor vehicle crash than drivers of older

    asked by Joel
  160. math

    Find the surface area of a small juice can whose diameter is 4 inches and whose height is 6.25 inches. Use 3.14 for ð. Hint: The can is a cylinder.

    asked by Anonymous
  161. algebra

    3a+5b=4 4a+3b=2 find a and b please

    asked by tanya
  162. Math

    2y^2 -8y -3 = 0 please solve

    asked by Amir
  163. psychology

    Why is Pseudo-psychologies so popular?

    asked by Lannette
  164. physics

    A 60kg boy is riding his bike to school. His acceleration is 15 m/sec^2. Determine the magnitude of the force he is exerting.

    asked by Laycee
  165. physics science

    Please can you help as I am stuck, Describe ib detail, how you would carry out an investigation to measure the density of a block of aluminium? Thankyou

    asked by chloe
  166. math

    The wall height, d, of the first story is 11 feet. The center height h of the second story has not yet been determined. Find h such that the second story will have the same cross-sectional area as the first story

    asked by Anonymous
  167. Algebra 2

    Solve the system y=-4x+4 y=-x-5 show work

    asked by Precious
  168. chemistry

    A piper delivers 10.04, 10.02, 10.08, and mL in consecutive trails. Find the mean volume and the average deviation from the mean.

    asked by Alicia
  169. biology

    Which of the following statements about the image show below is not an observation? (The object is a the bug) a. The insect has 3 legs on the left side. B. The insect has a pattern on its back. C. Then insects pattern shows that it is poisonous. D. The

    asked by glenn help help help
  170. English

    I didn't notice the spelling mistake. Could you please check which alternative is best? Thank you. 1) I did't manage to finish my homework before the beginning of the school. 2) On 30 December I was with a group of friends. (I spent New Year's Eve with a

    asked by Henry2
  171. chemistry

    Ethanol has a density of 0.780 g/mL. What volume would 500. grams of ethanol occupy. Answer with correct number of sig figs

    asked by kr
  172. Precalculus

    When a projectile leaves a starting point at an angle of elevation of theta with a velocity v, the horizontal distance it travels is determined by: d=v^2/(32) sin2theta Where d is measured in feet and v in feet per second. An outfielder throws the ball at

    asked by jake
  173. Psychology

    Using the format of an experimental write-up*, describe (and illustrate) 2 of the following 3 important Behavioral/Learning experiments: 1) Seligman’s “Learned Helplessness” experiment 2) Skinner’s “Latent Learning” experiment 3) Bandura’s

    asked by Giselle
  174. PHYSICS

    Sheena can row a boat at 2.91 mi/h in still water. She needs to cross a river that is 1.24 mi wide with a current flowing at 1.54 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream. (a) What is

    asked by Anonymous
  175. math

    The wall height, d, of the first story is 11 feet. The center height h of the second story has not yet been determined. Find h such that the second story will have the same cross-sectional area as the first story

    asked by Anonymous
  176. calculus

    9e^6ln(A)= A^( )

    asked by casey
  177. sociology

    i have to write three pages on this topic i need ideas. PLEASE Peter Berger likens sociological discovery to culture shock minus geographical displacement. He also points out that as a sociologist we must peel away the layers of the

    asked by kay
  178. chemistry

    (2.60 x 10^3 x 0.897) + 2.69 (with correct # of sig figs) IS the answer 2334.89

    asked by kr
  179. world history

    1)Who became Da vinci,s rival in Florence? -Michelangelo 2)What was the mistake Leornardo made with his work the last Supper? -leornardo chose to sit Judas in with the rest of the disciples 3)What was the name Da Vinci gave to his appertentice? Can you

    asked by nick
  180. English

    I just wanted to know if you have the tradition of "the kindly old woman" in America and if yes, what do you call her? 1) On Epiphany Eve the "kindly old woman" brought me many sweets and a pair of earings. 2) On 8 January I went back to school as all my

    asked by Henry2
  181. English

    I varied the sentences considering the students' point of view. Thank you very much for your advice They will be able to: 1)be familiar with the necessary linguistic structures to operate in a global study environment by taking a mainstream GE (General

    asked by Henry2
  182. easy math

    i want know how to say this in words. I try myself in brackets. i am doing this for bio class so if i have to speak out loud tomorrow i be able to correctly say numbers. 1 585 000 000 ( 1 billion, 585 million hundred thousands) 1 585 000 ( 1 million, five

    asked by Shreya
  183. math

    a car traveling on a straight road at 20 meters per second accelerates to 26 meters per second in 12 seconds. what is the total distance traveled by the car? please help!

    asked by lisa
  184. American Literature

    What wave of feminism would Charlotte Gilman ("The Yellow Wallpaper") fall into?

    asked by Casey
  185. maths

    A certain number has 3 digits.The sum of 3 digits =36 multiplied by the 3digits number.What is the 3 digit number?

    asked by mavis
  186. physics

    If someone kicks a soccer ball across a flat parking lot with an initial velocity of 19.0m/s @ 19 degrees, how long will the soccer ball be in flight and how high above its launch point will the ball go? What would be the x and y components of this

    asked by matt
  187. chemistry

    In class, we did a decomposition reaction of sodium hydrogen carbonate, which makes water, carbon dioxide, and sodium carbonate. How do you know when sodium hydrogen carbonate is completely reacted?

    asked by Anita
  188. algebra

    Lisa is planning to put a border around the edge of a circular table. She needs to know how long the border needs to be so that she can buy the material. Which measurement does Lisa need?

    asked by Pedro
  189. chemistry

    what is the heaviest element with a single letter symbol?

    asked by stephanie
  190. Physical Science

    A bicycle and its rider together have a mass of 80 kg. If the bicycle's speed is 6m/s, how much force is needed to bring it to a stop in 4 seconds.

    asked by Aubree
  191. chemistry

    Can someone answer please Determine the boiling point of water at 698.5 mm Hg?

    asked by Lisa
  192. chemistry

    A 100.0 gram sample of iron at 80.0 degrees Celsius was placed in 150 grams of water at 20.5 degrees Celsius. What was the final temperature when thermal equilibrium was reached?

    asked by tom
  193. Trig

    Prove (1+secx)/(tanx+sinx)=cscx

    asked by Matt
  194. physics

    A hydrogen atom has a single proton at its center and a single electron at a distance of approximately 0.0537 nm from the proton. What is the electric potential energy in joules?

    asked by anybody?
  195. Measurement:: Metric Units

    A classroom table is 1 m wide and 1.75 m long. How many 39 cm wide chairs can fit around the table?

    asked by Joe
  196. math

    Explain how you can tell 26 over 100 is greater than 1 over 4????

    asked by Nina
  197. Chemistry-help needed

    I have a question on thin layer chromatography (TLC). My mobile phase (i.e. developing solvent) is a mixture of 2 non-polar solvents. After preparing the mobile phase, is it necessary to pour some into the developing chamber to saturate the chamber or

    asked by Anne
  198. Geom

    solve for the value of x. C:\Users\Emily Shae\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\3J5934JU\paint[1].jpg please help me.. i don't want the answer just how to solve

    asked by Lexi
  199. English

    I'm posting you the ones I'm really unsure of. 1) The day after their visit I started my homework and I did't manage to finish it before the beginning of the school. 2) On 30 December I was with a group of friends. I spent the rest of my holiday meeting my

    asked by Henry2
  200. Reading

    1. Everyone hates frozen peanut butter sandwiches. Answer: O Circle:Everyone 2. The secretary keeps the peanut butter sandwiches in a refrigerator in the faculty room. Answer:F 3. Money was stolen three days in a row from students. Answer: F 4. Diane is

    asked by Brayden
  201. Math

    Angie's horse ran 3 miles in a race at the county fair. How many yards did her horse run? A.528yd B.5,280yd C.15,840yd D.1,584yd B? 2. What is the relationship between 75cm and 1m? F.75cm is 3/4 of 1m G.75cm is 1/4 of 1m H.75cm is 1/2 of 1m J.1cm is 2/3 of

    asked by Andrew
  202. math

    a quarter dropped from rest covers how much distance free falling for 10 seconds

    asked by gary
  203. Biology

    We did an assignment called the tooth pick fish and the yellow fish were in danger then all the green fish disappeared because they were in a hostile environment i don't fully under stand this question though Have any genes disappeared entirely?

    asked by Nae
  204. physics

    A car starts at a position of x=6 ft and has a speed of 7 mph. After 24 s the car has a speed of 40 mph. Determine the magnitude of the car's average acceleration during this time.

    asked by Jamie
  205. algebra

    Abigail's car uses 3 2/3 gallons of gas every hour on a long distance trip. How many gallons does the car use in 8 1/2 hours?

    asked by gianna
  206. algebra

    2/y+p=3/q

    asked by Anonymous
  207. Algebra1

    Mrs.Culowski traveled 24.0 kilometers north and then 10.0 kilometers east. How far was she from her starting point? use pytheorn Theorm i need help seting up the problem?

    asked by Anna
  208. Algebra 2

    Determine the solution to the system y≤x+6 2x+y≤-6 show work

    asked by Precious
  209. chemistry

    A piper delivers 9.97 g of water at 20c. what volume does piper deliver?

    asked by Alicia
  210. physics

    A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. The ball leaves the club at a speed of 16.3 m/s at an angle of 43.0˚ above the horizontal. It rises to its maximum height and then falls down to the green.

    asked by chelsea
  211. Algebra 2

    Solve the linear system 4x+4y=-2 y=-x show work

    asked by Precious
  212. math

    Ten times a number equals ten more than eight times a number. what is the number?

    asked by love
  213. Algebra 2

    Tell how many solutions this system has x-4y=2 x+4y=2

    asked by Precious
  214. physics

    A fire hose ejects a stream of water at an angle of 38.3 ° above the horizontal. The water leaves the nozzle with a speed of 29.5 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the

    asked by chelsea
  215. Math

    1.Angie's horse ran 3 miles in a race at the county fair. How many yards did her horse run? A.528yd B.5,280yd C.15,840yd D.1,584yd B? 2. What is the relationship between 75cm and 1m? F.75cm is 3/4 of 1m G.75cm is 1/4 of 1m H.75cm is 1/2 of 1m J.1cm is 2/3

    asked by Andrew
  216. chemistry

    A 141-mg sample was placed on a watch glass that weighed 9.203 g. What is the weight of the watch glass and sample in grams?

    asked by eric
  217. math

    Randy had a sheep that started eating more and more as each day passed.On July 1,Randy’s sheep ate 5 carrots. On July 2,Randy’s sheep ate 11 carrots. On July 3, the sheep ate 18 carrots. How many carrots will the hungry sheep eat on July 30th?

    asked by Anonymous
  218. arithmetic

    5 days a week in a 12 x 12 room 8 hours a day for 5 months approximate amount of electricity used

    asked by Anonymous
  219. algebra

    Which value of x makes the following equation true? 7.8(x - 2) = -0.2x + 40.4

    asked by chris
  220. physics science

    Please can you help as I am stuck, Describe ib detail, how you would carry out an investigation to measure the density of a block of aluminium? Thankyou

    asked by chloe
  221. english112

    Using unwise methods such as hanging a confederate flag to express ones' right to speech cause controversy among students and communites can this work as a thesis for the essay expressing freedom of speech on campus by derek bok

    asked by sharon
  222. Math 543 help

    Suppose you have a pizza. (a) What is the maximum number of pieces you can make with 4 straight cuts? (b) What is the maximum number of pieces you can make with n straight cuts?

    asked by deadlove
  223. chemistry

    What are the acids in the house?

    asked by Natasha
  224. MATH. HEEEELP.

    y=12^x What does this mean and how do you explain it on a graph?

    asked by He's not all bad like his reputation </3
  225. Chemistry

    The density of sulfuric acid is 1.82g/mL. What volume of sulfuric acid is needed to obtain 98.0g of sulfuric acid

    asked by Lori
  226. math

    A test has 125 items. Each correct answer earns 1point and 65 percent is a passing grade. If you get 42 answers wrong will you pass? Show working

    asked by Devon
  227. math

    Marla has three secret code cards. The first shows a 37. The second card has the first box blanked out, and the second box is a 2. The two code cards together equal the third card,which is 59. What is the missing number?. This is the word problem for 2nd

    asked by Mythreyee
  228. Algerbra 1 substitution method

    im really confused about this question: 2x-3y=21 y=3-x using substitution method. please help

    asked by Austin
  229. math

    Is six yards greater, less than,cor equal to 12 feet?

    asked by Someone...
  230. Management

    What are some steps company's can take to "control" its customers, competitors, suppliers, and labor

    asked by Anonymous
  231. Math

    A person invests a total of 22,00 in 2 accounts. 1 investment earned 7% while the other earned 5.5%. The amount of investments earned for one year was $1312. How much was invested in each account?

    asked by Alexis
  232. social studies - 2nd grade

    i have a test tomorow . so can you help me ? thank you.

    asked by Blair
  233. math

    if you have the numbers 41,67,13,44,25 and they want you to find the mode would there be no mode? I know mode is the number that appears most often

    asked by jill
  234. physics

    A space vehicle is coasting at a constant velocity of 22.5 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.223 m/s2 in the +x direction. After

    asked by Alex
  235. Bio-Chemistry

    Which compound is capable of donating a proton (H+)? A. Acetic acid B. Sodium hydroxide C. Acetylene D. Pentane E. Cyclohexane Which of the following statements is not true of a C-C triple bond? A. Longer bond length than a C=C double bond. B. 180 degree

    asked by Ryan
  236. math

    a grocery store display consists of cases of soda. there are 15 cases at the base, & 1case at the top. if there are 15 rows, how many cases are needed for the entire display? a) 180 b)30 c) 130 d) 15

    asked by jessica
  237. english

    Do you believe in putting old people into retirement homes?if yes or no why?or why not?

    asked by thembani
  238. math

    1. Dan is building a silo on his farm in the shape of a right circular cylinder. The silo has a radius of 20 cm and a height of 60 cm. If he were to increase the radius and height by a factor of 1.5, by what factor would the volume of the silo increase?

    asked by Anonymous
  239. math

    The diagram shows a shape, all the corners are right angles, all the measurements are in cm explain why (x+4) (x +5) - 6 15

    asked by joe
  240. calculus

    Solve for x: 2x=ex+1

    asked by britt
  241. calculus

    Find a formula for a quadratic function whose graph has a y-intercept at y = 21 and only one zero at x = –28.

    asked by Anonymous
  242. physics

    a 50kg brick bounces with 98% efficiency when droped from a 10 meter ledge. 1.how much energy does it have at the top of the bounce? 2.how high will it bounce?

    asked by 4611star
  243. Math

    How do you put into scientific notation -6 x 10 to the power of -5?

    asked by Li
  244. calculus

    Solve the equation 14=65(19)x for x using logs.

    asked by britt
  245. math

    is 5+x and x+5 represent the same expression? explain

    asked by blake
  246. calculus

    Put the function P=40(39)t in the form P0e^kt. When written in this form, you have: k= ? P0= ?

    asked by sara
  247. math

    Explain how 9/12 is greater than 1/2

    asked by billy
  248. Science

    What are emotional changes boys and girls experience during puberty?

    asked by Sasha
  249. chemistry

    A light photon with a frequency of at least 0.0906 ~ 1016 Hz is required to split apart hydrogen bromide according to the equation: HBr(g) ¨ H(g) + Br(g) Calculate the energy (kJ) required to break apart a mole of hydrogen bromide. Express answer in

    asked by adriana
  250. chemistry

    how much water should i add to neutralize 1000 milliliters oh ph 13

    asked by Tim
  251. math

    if 5 eighths of a board is erased and 3ft remains, what was the size of the board?

    asked by Anonymous
  252. Calc 3

    if r= and r_0= , describe the set of all points (x,y,z) such that magnitude[r-r_0]=4

    asked by Emily
  253. math

    values for area and length of right triangular prism with volume of 6

    asked by nicole
  254. chemistry

    A light photon with a frequency of at least 0.0906 x 10^16 Hz is required to split apart hydrogen bromide according to the equation: HBr(g) --> H(g) + Br(g) Calculate the energy (kJ) required to break apart a mole of hydrogen bromide. Express answer in

    asked by adriana
  255. English

    Find The Subject and Verb in this sentence. Candle wax dripped onto the table and hardened into pools.

    asked by Justin
  256. Algebra 2

    What is three root 1/3 ? I'm not sure if that looks right in words, but I don't know how to post the square root symbol. If that doesn't make sense, then pretend that this sign: % is a square root: 3 %1/3 The 3 looks like it's a little above it. Please

    asked by Gavin
  257. physics

    why do x-ray technicians use lead aprons when they are exposed to x-rays while we are exposed to radio waves and are not protected

    asked by shirley
  258. Physics

    I just wanted to be sure if I got the answer right 1. Jenny (75 kg) goes on a ski trip. She goes down a slope that's inclined at 15*. Her drag coefficient is 0.300, the area of contact with the air is 0.750 m^2 and the air density is 1,31 kg/m^3. The

    asked by Tom
  259. economics

    i need to write an editioral in a newsletter format regarding the rights and responsibilites of us citzens- i don't know how are where to start

    asked by chy'anne
  260. math

    marcia said that if she estimates 73 x 7 ,the product will be less that the exact answer. is she correct ? explain.

    asked by john
  261. math

    Can some one help me wit this: Find the exact value of 4cos7(3.14...)/4 - 2sin(3.14...)/3 please and thank you

    asked by Anonymous
  262. math

    Which number is larger in each of the following pairs a.)C(9,3), C (10,2) b.)C(12,4), C (18,3) c.)C(9,3), 6! d.)3^5,5!

    asked by Anonymous
  263. Math

    A scooter factory runs two assembly lines, A and B. 97.4% of line A’s scooters pass instruction, while only 94.9% of line B’s scooters pass inspection. 65% of the factory’s scooters come off assembly line A. a) What is the probability that a randomly

    asked by Ashley
  264. Algebra

    What is the rule of a function table to find the number of inches in 4, 6, 8, and 10 feet?

    asked by Taylor
  265. easy math

    I converting 0.001mm to micrometers using staircase method and micro come under millimeter, so that mean move one decimal to right so would it not be 0.01?

    asked by Shreya
  266. math

    i have 250 and my brother has 150 find the ratio of my brother money to mine

    asked by emma
  267. Algebra 2

    What is three root 1/3 ? I'm not sure if that looks right in words, but I don't know how to post the square root symbol. If that doesn't make sense, then pretend that this sign: % is a square root: 3 %1/3 The 3 looks like it's a little above it. Please

    asked by Gavin
  268. social studies

    when and where were clothes first made

    asked by vickie free
  269. finance

    Indexing exemptions for inflation. Each year, the Internal Revenue Service adjusts the value of an exemption based on inflation(and rounded to the nearest $50). In a recent year, if the exemption was worth $3,100 and inflation was 4.7 percent, what would

    asked by shanty
  270. math

    What other number besides 30, have 2, 3, and 5 as factors?

    asked by Gabby ( 5 grade)
  271. Math

    A certain size bottle holds exactly 4/5 pint of liquid. How many of these bottles can be filled from a 20-pint container?

    asked by Bridgett
  272. Math

    A certain size bottle holds exactly 4/5 pint of liquid. How many of these bottles can be filled from a 20-pint container?

    asked by Bridgett
  273. algebra

    you can rent a boogie board at tybee island for a $ 10 flat fee plus $.50 for each hour.The situation can be modeled by a linear eqution.What is the slope

    asked by kim
  274. Math

    Catherine's dental appointment took 3/4 hour. She left the dentist at 11:10 A.M. What time did her appointment begin? F. 11:40A.M. G. 11:55A.M. H. 10:25A.M. J. 10:55A.M

    asked by Andrew
  275. chemistry

    For each solution whose pH value deviated from 7.0 by at least 1.0 pH unit, give an equation accompanied by a statement which gives the reasons and/or explanation for the deviation.

    asked by mary
  276. math pre algebra

    a kennel owner is buying a new building he want the space for each dog run to be at least 96 square ft the area reserved for the dog ru.s is 30 ft by 60 ft

    asked by eddie
  277. chemistry

    For each solution whose pH value deviated from 7.0 by at least 1.0 pH unit, give an equation accompanied by a statement which gives the reasons and/or explanation for the deviation.

    asked by mary
  278. Physical Science

    A force of 20 Newtons gives a brick an acceleration of 5 m/s^2. What is the mass of the brick?

    asked by Maci
  279. physics

    At high speeds, a particular automobile is capable of an acceleration of about 0.510 m/s^2. At this rate, how long (in seconds) does it take to accelerate from 95.0 km/hr to 101 km/hr?

    asked by jholm
  280. English

    Hello. Will you please help me with one more question? Is it possible to use "currently" in reference to the past, for example: "He was currently working for a large company." (meaning - at that time) Thank you very much.

    asked by Ilma
  281. math

    WHAT IS 1/3 OF $66.00

    asked by Anonymous
  282. math

    a community center charge a monthly fee of $7,plus $5 rach time you use the swimming pool. write an expression for the total cost of swimming n times in a month

    asked by zed
  283. science

    I have a test tomorrow and i need to be able to say what type of bacteria something is in their agar colonies. I am having a hard time diffirentiating between bacillus cereus and bacillus subtilis. does anyone have any good websites that would help? or

    asked by martha
  284. media

    9. How is culture reflected in movies and television?

    asked by Anonymous
  285. math

    number sense . is the product of 4 x 8,827 less than 36,000? how do you know ?

    asked by reny
  286. math

    therebare 365 days in a year. about how many days has Jared lived if he has reached his 8th birthady?

    asked by mia
  287. US History

    What is the historical significance of impeachment?

    asked by Shelby
  288. Culturally diverse backgrounds

    A five year old ___ American child used to enjoy choosing her playmates and activity center on the playground, but after her mother visited and oberved the free play time, the child abruptly stopped this activity. a. Mexican b. native c. japanese

    asked by rhonda minnis
  289. Trig

    Solve the following trig equation 2cos(x-π/6)=1

    asked by Matt
  290. physics

    what happens when a liquid is being heated at its boiling point?

    asked by doris nyirongo
  291. math/estimating products

    an arena seats 7,893 people.The circus is in town and all of the tickets have been sold. If the circus has 4 performances, about how many tickets were sold?

    asked by jimmy
  292. Math

    what is the gcf of 35 and 1,715

    asked by Ryan
  293. Math

    What numbers exactly divide the ff.? 111- 522- 505- 2 320- 1 602- 3 732- 189 325- 13 854- 255 168- 729- Thank You!

    asked by Sean
  294. physics

    A certain capacitor stores 473 J of energy when it holds 7.91 x 10−2 C of charge. What is the capacitance of this capacitor? What is the potential difference across the plates?

    asked by Ashley
  295. maths

    A loaf of bread is normally distributed with a mean of 22 oz and a standard deviation of 0.5 oz. What is the probability that a loaf is larger than 21 oz?

    asked by atul
  296. english

    can you pl rewrite the following sentence 1.the glass broke because you were careless if you _________________________________

    asked by R S Telagathoty
  297. Math

    Please match each number with its best example. Some values will need to be changed into a decimal format. A. Recurring Decimal B. Mixed Number C. Non-repeating Decimal D. Finite Decimal E. Decimal Examples: ½ 5½ π 0.375 ⅓ I think 5½ is B and ⅓ is

    asked by Jess
  298. englishcan

    can you pl correct the following : is this the person which you are talking about him ?

    asked by R S Telagathoty
  299. Chemistry

    If the concentration of a reactant is decreased, will the speed of the reaction increase or decrease? Explain. I understand that if the concentration of a reactant is INCREASED, the frequency of coliision increases, making the rate of reaction increase.

    asked by Alexandra
  300. math

    what three consecutive months would have the least number of days

    asked by megan
  301. calculus

    If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?

    asked by Anonymous
  302. calculus

    If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?

    asked by Anonymous
  303. calculus

    If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?

    asked by Anonymous
  304. physics

    What is the angle between vector b and the positive x-axis? b = -18.2 x + 6.4 y

    asked by qwertzuiop
  305. English

    Could you please check the following sentences, please? Thank you. 1)I'm still waiting to receive an answer from the principal of the German school to see if they are willing to accept your school in our Comenius partership. 2) In any case, our science

    asked by Henry2
  306. English

    I left out the following sentences. Thank you very much for helping me. 1) As for our Comenius project on biodiversity in water, I'm attaching a copy of the European module the coordinating school has to fill in by 21 February. 2) Do you think you could

    asked by Henry2
  307. calculus

    what is the solution of this inequality?: x+3/x^2-5x+4>_0?

    asked by Destiny
  308. statistics

    hhh

    asked by Anonymous
  309. calculus

    what is the solution of this inequality?: x+3/x^2-5x+4>_0?

    asked by Destiny
  310. Business

    I want to buy a house in 3 years. I need to have a down payment of $20,000. How much do I need to have today in order to have that if I can earn 4.5%?

    asked by Rene
  311. math

    Bikes, Trikes and more At Brittany's Bike shop, she rents all kinds of cycles: unicycles, tandems, regular bikes, and even tricycles. She parks all the cycles in front of her shop with a helmet for each rider strapped to the cycles. This morning Brittany

    asked by zachary stanich
  312. Business

    I am looking at buying a new Camry. I think I can talk them down to $19,000. If the bank is willing to finance it for 60 months at 3.75%, what would my monthly payment be?

    asked by Rene
  313. Social Studies 7R - Qs. Check

    What is Preamble? I know the pre part is before but what about amble? My Answer: Intro of the Declaration of Independence. Is my answer is correct.

    asked by Laruen
  314. math

    1 3/4, 1 9/10, 1 1/2 in a numberline from least to greatest

    asked by aaliyah
  315. Algebra I

    How do you put into scientific notation -6 x 10 to the power of -5?

    asked by Li
  316. Biology

    Yellow genes are recessive to green; green are dominant to both red and yellow. Which color of genes disappeared faster when the environment was hostile to them? Why?

    asked by Nae
  317. Math

    How much is 0.123 in m?

    asked by Linsay
  318. Physics

    The figure shows the treatment of fractures of the humerus shaft with a cast of the upper arm bent by 100 to 110 degrees at the elbow joint, and an attached traction device. The traction device keeps the upper arm under tension to lower the risk of

    asked by Sally
  319. Math

    2y^2 -8y -3 = 0 please solve

    asked by Amir
  320. Math

    2y^2 -8y -3 = 0 please solve

    asked by Amir
  321. Math

    2y^2 -8y -3 = 0 please solve

    asked by Amir
  322. Math

    2y^2 -8y -3 = 0 please solve

    asked by Amir
  323. math

    How do figure out,5/8 + 5/6,=

    asked by brandi
  324. Algebra 2

    A factory is producing DVD and Blu Ray discs. For each case of DVDs they make $180 profit. For each case of Blu Ray they make $250. The DVDs take 3 minutes of machine time and 7 minutes of labor. The Blu Rays take 4 minutes of machine time and 12 minutes

    asked by Precious
  325. personal finance

    At what age do you hope to retire? How do you plan to incorporate your retirement in your personal financial plan?

    asked by tahesia
  326. divide

    57 divided by 2 use estimation

    asked by brayden
  327. physics

    suppose a 1.50 kg object is suspended from the end of a silicone band. when the object is pulled down and released, the band vibrates at a frequency of 2.08 s-1. calculate the spring constant of this silicone band including units.

    asked by Kyle
  328. Algebra 2

    A factory is producing DVD and Blu Ray discs. For each case of DVDs they make $180 profit. For each case of Blu Ray they make $250. The DVDs take 3 minutes of machine time and 7 minutes of labor. The Blu Rays take 4 minutes of machine time and 12 minutes

    asked by Precious
  329. math

    How many 9 inch square tiles are needed to cover a table top that is 3 feet by 3 feet?

    asked by Kimberly
  330. math

    1.4/9 and 1/5

    asked by brandi
  331. chemistry

    A man who is 5ft tall weights 140 lbs. What is his height in centimeters and his mass in kilograms?

    asked by kia
  332. Chemistry

    I have a question I want to make sure I'm going in the right direction. The question states give a diatomic element which is not a gas could the answer be any of the noble gases

    asked by Tiffany
  333. Algebra 2

    Determine the solution to the system y≤2x-2 y≥-x-3 Show work

    asked by Precious
  334. math

    Can some one help me wit this: Find the exact value of 4cos7(pi)/4 - 2sin(pi)/3 please and thank you

    asked by Anonymous
  335. math

    or each month jack works he earns an increase or raise of $. 05 on his hourly pay if he has already worked for three months, which shows his 4th month's hourly rate in terms of his first month's hourly rate?

    asked by dani
  336. American history

    term for people who farmed rented land and 75% of southern whited

    asked by Jaysun
  337. math

    how do i calculate cost per minute if the movie budget was 80 million and it 's run time is 85 minutes?

    asked by bethann
  338. MATH

    Explain how to find the sum negative sixty-five plus positive forty-one using a number line, then give the answe

    asked by cha
  339. chemistry

    (3.84 x 103 x 0.764) + 1.59 answer with the correct sig figs

    asked by k
  340. chemistry

    An antibiotic is sold in 4.0 mL ampoules that contain 60.0 mg of drug (60.0 mg/ 4.0 mL). How many milliliters of the antibiotic should be withdrawn from the ampoule if 20 mg are to be administered to a patient?Answer with the correct number of sig figs

    asked by krystal
  341. Child development

    What interesting materials and experiences might promote cognitive and language growth in pre-school age children?

    asked by Adrienne
  342. trig

    Find the indicated trigonometric function, given that è is an angle in standard position with the terminal side passing through the given point. 2) (15, 20); Find csc è. A) 5/3 B) 3/4 C) 5/4 D) 4/3

    asked by bhangu
  343. Math

    the total of 14 and difference number and 2

    asked by Bb 33
  344. chemistry

    When 15.5 + 0.125 + 2.55 are added, the answer with the correct number of significant figures is

    asked by katie
  345. clasa a6a

    construiti un triunghi dreptnghic in care: a)catetele au lungimea de 5 cm si 2,5 cm

    asked by gometrie
  346. chemistry

    You are traveling in a country that uses the metric system. Your child is sick and a nurse determines her temperature to be 40.8 ºC. What is this temperature in ºF?

    asked by kr
  347. algebra

    solve the system y=x+3 y=-3x+7

    asked by Anonymous
  348. math (Urgent)

    What is the angle (in standard position - i.e. measured counterclockwise from the positive x-axis) formed by a line from the origin to point (1,-2)? Please help and Thank you

    asked by Anonymous
  349. Math

    Product costs are increased by the presence of middlepersons in the distrubution channel. (Points: 5) True False

    asked by T.
  350. Science

    I do not need a link, just a straight up answer please. What are 3 saftey tips you can give me for 'Tornadoes'?

    asked by Sarah
  351. math

    16 9 inch square tiles

    asked by Anonymous
  352. Management

    What are some steps we can take to prepare an person to work in another country?

    asked by Anonymous
  353. Science

    Can you tell me one time a tornado actually took place in the world and which tornado was it?

    asked by Victoria
  354. Math

    What is the angle (in standard position - i.e. measured counterclockwise from the positive x-axis) formed by a line from the origin to point (1,-2)? Please help and Thank you

    asked by Anonymous
  355. Pleaseeeee help! on science

    Can you explain a watch and a to me on tornados

    asked by Porsha
  356. trig

    How can I find the exact value of 4cos(7ð/4)-2sin(ð/3)?

    asked by Anonymous
  357. calculus 2

    1.Find the length of the curve y=ex+1e−x between x=0 and x=1.

    asked by Anonymous
  358. math

    Leah is throwing discs onto a board numbered 1 to 20. To win a prize she needs to hit two numbers whose product is 85 and whose sum is 22. what are the numbers?

    asked by Anonymous
  359. business law - Contracts

    Jeff wanted to sell his motor boat. He offered it to Sally for $3700. Jeff knew that he intended to remove some special water skiing equipment from the boat, which he planned to give to his best friend, Roger, but he never mentioned to Sally anything about

    asked by Anonymous
  360. Math

    y=12^x What does this mean and how do you explain it on a graph?

    asked by He's not all bad like his reputation </3
  361. calculus 2

    .Find the length of the curve y=e^x+1/4 e^−x between x=0 and x=1.

    asked by Anonymous
  362. college algebra

    I need to find out the solution in terms of natural logarithms for this 10^x=2.5

    asked by Betty
  363. College Math

    20s-5r ---------- 10r-5s reduce to simplest form

    asked by Fabian
  364. college algebra

    I need to find out the solution in terms of natural logarithms for this 10^x=2.5

    asked by Betty
  365. PHYSICS

    A dolphin wants to swim directly back to its home bay, which is 0.85 km due west. It can swim at a speed of 4.35 m/s relative to the water, but a uniform water current flows with speed 2.82 m/s in the southeast direction. (a) What direction should the

    asked by Anonymous
  366. Physics

    A parallel plate capacitor has a capacitance of 1.71 nF. There is a charge of 0.809 μC on each plate.

    asked by Ashley
  367. physics

    Describe in detail an experiment to find out the half life of a radioactive material

    asked by chloe
  368. Trignometry

    How can I find the exact value of 4cos(7ð/4)-2sin(ð/3) without using a calculator (show work)?

    asked by Anonymous
  369. algebra

    A wholesaler lists a refrigerator model at a price of $850 and offers a chain discount of 20% and 10%. What is the net price? (Points: 5) $476 $595 $612 $644

    asked by T.