Questions Asked on
October 17, 2012

  1. maths

    (Sin^3x-cos^3x)/(sinx-cosx) – cosx/sqrt(1+cot^2x)-2tanxcotx=-1 where x∈(0,2pi) general value of x.

  2. math

    The total weekly cost (in dollars) incurred by Lincoln Records in pressing x compact discs is given by the following function. C(x) = 2000 + 2x - 0.0001x^2 (0≤x≤6000) (a) What is the actual cost incurred in producing the 1071st and the 1891st disc?

  3. physics

    A certain car can accelerate from rest to the speed v in time T seconds. (a) If the power output of the car remains constant, how long does it take for the car to accelerate from v to 3v, in terms of T? (b) How fast is the car moving 9T after starting, in

  4. Math

    a geograpphical globe has radius of 18cm find the radius of the circle formed by the parallel of latitude 56 degree

  5. maath

    The accompanying tree diagram represents a two-stage experiment. (Let x = 0.45, y = 0.55, r = 0.65, s = 0.35, t = 0.4, and w = 0.6.) Use the diagram to find the following probabilities. (Round your answers to three decimal places.) (a) Find P(A) · P(D |

  6. Physics

    A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block as shown in the figure.

  7. Physics

    A boat’s speed in still water is 1.95m/s . The boat is to travel directly across a river whose current has speed 1.20m/s . Determine the speed of the boat with respect to the shore. Despite, I did it like taking the sqrt (1.95^2+1.20^2) is there

  8. English

    Can you please check my answers? Any questions involing italicized words just skip. 1. Choose the sentence in which the verb has a direct object. A. They won the game. B. She is insecure. C. I walked away. D. George was furious. 2. Which one of the

  9. grammar

    Plural possesive of Mr. Valdez. (i.e., Mr. Valdez's performance at work....)

  10. math

    2) Sven sells hamburgers at a ballpark. He earns $7.50/hour, plus $0.40 for each hamburger he sells. b) How many hamburgers must Sven sell to earn $100 in a 6.5 shift? How many hamburgers must Sven sell to earn $100 in a 6.5 shift?

  11. AP Chemistry

    The Synthesis of an Iron Oxalato Complex Salt (“Green Crystals”) In this experiment you will synthesize a compound that will contain the elements potassium, iron, carbon, hydrogen, and oxygen. Carbon and oxygen will be present in the compound as

  12. Physics HELP!!

    Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. The magnitude of each of the charges is 3.66 μC, and the lengths of the sides of a triangle are 2.15 cm.

  13. math

    If you have black socks and brown socks in your drawer mixed in a ratio of 4 to 5, how many socks will you have to take out to make sure that you have a pair the same color?

  14. Microeconomics

    4a. In the market for hand-made guitars, when the price of guitars is $800, annual revenues are $640,000. When the price falls to $700, annual revenues decline to $630,000. Over this range of guitar prices, is the demand for hand-made guitars elastic,

  15. Physics URGENT!!!

    A 75.0 kg fullback running east with a speed of 6.00 m/s is tackled by a 82.0 kg opponent running north with a speed of 5.00 m/s. (a) Calculate the velocity of the players immediately after the tackle. (b)Calculate the direction of the players immediately

  16. math

    Explain why the product of an integer multiplied by itself cannot be negative.

  17. Math

    A town has population 225 people at year t=0. Write a formula for the population, P, in year t. a) grows by 10% per year I don't understand how to do this, and keep getting the wrong answer. Also, Find a formula for the linear function q(x) whose graph

  18. Math/Management

    FuelMotion is an oil company that owns two oil processing plants that produce gasoline from crude oil. Their Georgia Plant produces 2 thousand gallons of premium, 1 thousand gallons of medium, and 6 thousand gallons of regular gasoline every day it

  19. Accounting

    On June 1, 2012, Pitts Company sold some equipment to Gannon Company. The two companies entered into an installment sales contract at a rate of 8%. The contract required 8 equal annual payments with the first payment due on June 1, 2012. What type of

  20. Physics

    A ball is shot from the top of a building with an initial velocity of 19m/s at an angle theta = 45 above the horizontal. Vxo and Vyo, are 13.4m/s If a nearby building is the same height and 50m away, how far below the top of the building will the ball

  21. Chemistry

    If 4.02g of hydrogen and 25.0g of oxygen (at standard conditions) are reacted to form water vapor, what quantity of heat is evolved from this reaction given that standard enthalpy of formation of H2O is -242kJ/mol?

  22. Math 8 - help!!!

    15 - x = 2 (x +3) 15y + 14 = 2(5y + 6) 1/2 (6x - 4) = 4x - 9 4(3d -2) = 8d - 5 please help me with these problems. I done other 20 problems just to let you know.

  23. Physics

    PLEASE SOMEONE HELP ME WITH THIS DARN QUIZ. I'm so lost and all my teachers are too 'BUSY' to help me. :/ I'm getting so sick and tired of studying and not getting it but then having to take the blame for my instructor's folly. 2. Which of the following is

  24. business

    A production run of toothpaste requires a fixed cost of $100,000. The variable cost per unit is $3.00. If 50,000 units of toothpaste will be sold during the next month, what sale price must be chosen in order to break even at the end of the month? Note:

  25. physics

    What will the angle of refraction be for a ray of light passing from air into a sodium chloride crystal, if the angle of incidence is 60.0°? The index of refraction of sodium chloride is 1.53.

  26. Pre-Algerbra

    Someone help explain? Justin wants to use 188 ft of fencing to fence off the greatest possible rectangular area for a garden. What dimensions should he use? What will be the area of the garden? ~ A. 89 ´ 99 ; 8811 ft B. 92 ´ 96 ; 8832 ft C. 94 ´ 94 ;

  27. Chem help

    Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have?

  28. Physics

    A pendulum 1.70m long is released (from rest) at an angle 30 degrees. 1. Determine the speed(m/s) of the 60.0g bob at Theta = 15. 2. Determine the tension in the cord at the lowest point Theta = 0. 3. Determine the tension in the cord at Theta = 15. A

  29. Math

    8. A mile-long train is moving at 60-miles-per-hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through? 9. How many 3-cent stamps are there in 4 dozen?

  30. Physics

    How many newtons of force are necessary to accelerate a 0.0050 kg mass at the acceleration (a) of 9.81 m/s2 with the force expressed in the correct number of significant figures? (F = ma) 0.04905 N 0.049 N 0.05 N 4.91 × 102 N Please help me :( It's just

  31. math

    A train ticket in a certain city is $2.00. People who use the train also have the option of puchasing a frequent rider pass for $17.25 each month. With the pass, each ticket costs only $1.25. Determine the number of times in a month the train must be used

  32. staticstics

    The average length of an adult blue whate is 30 meters with a standard deviation of 5.7 meters. If a sample of 31 whales is taken, what is the probability that their average lenght differs from the mean by more than 2.0 meters

  33. math

    simplify expression 6(6)+ 6(4)

  34. physics

    A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in contact with a ball, initially at rest, for about 0.0013 s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 1.2X10^2 ft/s,

  35. Physics

    1. Which of these physical situations describes an inversely proportional relationship? (Points : 1) The volume always decreases as the pressure increases. The volume always increases as the pressure increases. The pressure vs. volume graph is a straight

  36. physical science

    A clam is dropped by a seagull it takes 3 seconds to hit the ground. what is the seagulls height approximate height above the ground at the time the clam was dropped?

  37. U.S History

    Okay so i have the answers but i would like to know if i have them right. may someone tell me which ones are right and wrong ? Which of the following describes Loyalists? (1 point) A. They decided to fight against the British. B. They supported British

  38. French

    Do these sentences make sense? Im a bit confused on when to use des,de,du etc. versus l',les,la,le etc. -Il vous faut de jambon, le baguette, et du fromage. -Il vous faut des fruits et des sucre. -Il vous faut le steak et les frites. -Il vous faut les

  39. Physics

    A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in contact with a ball, initially at rest, for about 0.0013 s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 1.2 102 ft/s,

  40. health

    Resistance exercises improve muscular strength in person with such condition as A-Multiple sclerosis B- Cerebal palsy and spinal cord injuries C-Cognitive disability D-All above

  41. Math

    Why are 2/3, 4/6, and 6/9 equivalent fractions?

  42. Chemistry

    A 0.528 gram sample of a metal, M, reacts completely with sulfuric acid according to: M+H2SO4 -> MSO4+H2 A volume of 205 mL of hydrogen is collected over water; the water level in the collecting vessel is the same as the outside level. Atmospheric pressure

  43. Finite Math

    An NBA player makes a successful free-throw 80% of the time. Find the probability that he is successful exactly 4 times in 5 attempts?

  44. Chemistry

    Why do acids and bases form ions when they dissociate in water

  45. Physics

    A man claims he can safely hold on to a 12.80 kg child in a head-on collision with a relative speed of 133. mi/h lasting for 0.100 s as long as he has his seat belt on. (a) Find the magnitude of the average force needed to hold onto the child.

  46. Pre-Algerbra

    A basketball drops from a height of 76 in. On bounce 1, it rebounds to a height of 38 in. On bounce 2, it rebounds to a height of 19 in. How high does the basketball bounce on bounce 3? ---- A. 9 inches B. 19 inches C. 9.5 inches D. 4.75 inches

  47. math

    you are driving to a vacation spot that is 1500 miles away. Including rest stops, it takes you 42 hours to get to the vacation spot. You estimate that you drove at an average speed of 50 miles per hour. How many hours were you not driving?

  48. math

    help with these 2 questions 1, Estimate the number of pencil cases needed to hold 10 thousand pennies. Show your work. 2 Estimate the height of a stack of 50 thousand pennies. Show your work.

  49. Chemistry

    Could Anyone please let me know if I'm right I think that is 1 and 2?? which of the following changes will increase reaction rate? 1. An increase in the concentration of reactants 2. An increase in temperature 3. Higher-energy collisions between reacting

  50. organic chemistry

    when 2 propanol was used as the developing solvent, two substances moved with the solvent front (Rf=1) during TLC analysis on a silica gel plate. can you conclude that they are identical? if not what additional experiments would you perform?

  51. Physics IB

    Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If the speed of ball 1 was initially 5.00 m/s, and that of ball 2 was 7.00 m/s in the opposite direction, what will be their speeds after the collision? I figured out how to

  52. chemistry

    Suppose that 0.650mol of methane, CH4 (g), is reacted with 0.800mol of fluorine, F2 (g), forming CF4 (g) and HF (g) as sole products. Assuming that the reaction occurs at constant pressure, how much heat is released?

  53. chemistry

    c. A student put 1.18 mole of substance A and and 2.85 mole of substance B into a 10 litre flask which was then closed. The reaction that took place was: A(g)+ 2B(g) 3C(g) + D(g) On analysis the equilibrium mixture at 25 0 C was found to contain 0.376mole

  54. History

    The Magna Carta laid the foundation for a written social contract between the government and the people. True* False It protected the rights and property of all those considered to be free men. True * False It limited the king's power to tax without the

  55. Physics

    PLEASE HELP, I'm trying to study for a quiz >.< and I don't understand this one question! A fellow student reports his measurements of time for a speed calculation in minutes. How could he express that calculation using SI base units? A)convert minutes to

  56. Physics

    HI! :( Im sorry to bother you guys but I need help on only these three questions. I'm not trying to cheat but these three are really confusing. This is the first time I've ever asked for help on the internet haha. Please don't be upset I promise this is

  57. english

    Is the verb intransitive or transitive in this sentence? Jazz began in New Orleans.

  58. Maths

    There are 36 pupils in a class. Each girl is given 8 books and each boy is given 3 books. The total number of books the girls receive is 46 more than the total number of books the boys receive. How many girls are there in the class? The ratio of the number

  59. Geology

    How do I determine the age of Gabbro, Granite and Gneiss

  60. Microeconomics - University of Boston

    4. If Cassandra bought 16 cotton blouses last year when her income was $40,000 and she buys 24 cotton blouses this year when her income is $50,000, then what is her income elasticity of demand? Interpret what the income elasticity of demand you just

  61. English

    Once order had been restored the leaders of the opposition called for the (revocation keepsake) of martial law revocation? At times it is quite natural to feel afraid and it is certainly no (discredit mortal) to anyone to admit it discredit? While the

  62. Calculus

    use the mean value theorem to find the c's on the open interval (a,b) such that fprime(c)= (f(b)-f(a))/(b-a) f(x)= 3xlog(base 2)x , [1,2]

  63. Trig

    a person who eyes are 5 feet above the ground observes the top of a building to have an angle of elevation of 40 degree. The person walks 100 feet closer to the building and observes that the top of the building now has an angle of elevation of 65 degree.

  64. science

    how do geologist use different type of crystal shapes to classify minerals

  65. engineering

    A string is fit snugly around the circumference of a spherical hot air balloon. More hot air is added (probably by a prominent scientist’s lecture) and it now takes an additional 12.4 feet of string to fit around the circumference. What is the increase

  66. English

    How do I write a analysis paper? What would be some good topics. Please help me I really need some help.

  67. chemistry

    How much HCl 9in grams) is needed to prepare 546 mL of solution with a pOH of 10.00 at 25?

  68. math

    If alison was rounding to find how much 13 books that were 9$ apiece cost would she get a good estimate?

  69. Math

    Artie Choke and Tom A. Toe both shop at the same local grocery store between five and six in the evening. The last time they saw each other was on Tuesday. Artie shops every five days and Tom shops every four days. What day of the week will they next run

  70. physics

    Two forces are the only forces acting on a 2.8 kg object which moves with an accelera- tion of 2.5 m/s2 in the positive y direction. One of the forces acts in the positive x direc- tion and has a magnitude of 12 N. What is the magnitude of the other force

  71. math

    simplify epression 6(6)+ 6(4)

  72. math

    put these numbers in order from smallest to larest. 0.6 0.06 0.43 0.9

  73. Physics

    Roller Coaster Cart Mass = 200kg String Compressed by 5m Initial Velocity 25 m/s Find the Spring Constant

  74. CHEM HELP RIGHT NOW PLEASE

    n the titration of 25.00 ml of a water sample, it took 20.590 ml of 4.995x10-3 M EDTA solution to reach the endpoint. Complete the questions below: Calculate the number of moles of EDTA required to titrate the water sample. (enter your answer with 3

  75. physics

    A football is kicked 66.6 meters. If the ball is in the air for 5.39 seconds, with what initial velocity was it kicked?

  76. math 5

    estimate the number of pencil cases needed to hold 10 thousand pennies . Show your work. 2 estimate the height of a stack of 50 thousand pennies . show your work.

  77. science

    how does the composition of most minerals differ from a pure elements

  78. social studies

    why do you think some critics of the new deal feared that it's programs might lead?

  79. Geometry

    Jero claims that the statements line LR is congruent to line RL and angle CBA is congruent to angle ABC are both true by the Reflexive Property of Congruence. Explain why Jero is correct. I have an idea of what the answer could be but would someone please

  80. Finance Homework

    You are told by the finance section that a particular projects NPV is positive, but that the standard deviation of the NPV (after performing a monte carlo simulation) is exactly triple the expected NPV figure. If NPV is normally distributed, what is the

  81. math

    23×17=

  82. finance

    Given: WACC= 12%, NPV=+1,491.39, IRR=14.87378%, your all-equity firm has 5,000 common shares outstanding, and the cash flows are: CF0= -18,000, CF1= 3,000 CF2= 3,000, CF3=7,000, CF4?, CF5= 10,000. What is the cash flow at time-point 4.

  83. Math

    Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first card is a spade given that the second card is a club? (Round your answer to three decimal places.)

  84. Scince 8R- help!!!!

    For homework I have to bring in a graph from a newspaper. The thing is that I don't have a newspaper so my teacher said that I can print a line graph. Is there a printable line graph????? please help

  85. PHYICS NEED HELP BAD!

    A football is kicked 66.6 meters. If it is in the air for 5.39 seconds, with what initial velocity was it kicked? magnitude and direction above horizontal

  86. PHYSICS ASAP!

    A Football is kicked 66.6 meters in 5.39 seconds. What was the initial velocity? Magnitude and Direction

  87. HELP!! math 5

    what number is increased by 3 when it is rounded to the nearest ten thousand or to the nearest thousand

  88. Math

    A 10-in2 section of a 25-in2 dartboard is painted red. If a dart lands at random on the dartboard, what is the probability that it lands in the section painted red?

  89. physics

    A 1.16 kg block and a 2.32 kg block are initially at rest on a frictionless, horizontal surface, with a compressed spring of negligible mass between them. When the blocks are released, they move off in opposite directions. If the final velocity of the 1.16

  90. Math

    Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first card is a face card (jack, queen, or king) given that the second card is an ace? (Round your answer to three decimal places.)

  91. algebrsa

    how do you get vy by itself 0=vy*5.39-.5*9.8*t

  92. Please Help! Math!

    Find the domain of the function: g(x) = 2x + 3 / 3x - 4

  93. Physics

    1. The mass of Kerry and the sledge together is 40 kg. Sam pushes with a force of 50 N for 4 s. a. What is the value of the quantity: (force x time) during which the force acts? 50 x 4 = 200 b. So what is the increased momentum of Kerry and the sledge? c.

  94. Chemistry

    What amount of energy is required to completely ionize 21.5 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole? Answer in units of J

  95. Physics URGENT!!!

    A 91.0 kg fullback running east with a speed of 6.00 m/s is tackled by a 73.0 kg opponent running north with a speed of 3.00 m/s. Where did the lost energy go?

  96. science

    what in nature could you find a source of the same energy as that provided by batteries?

  97. 4th grade algebra

    Christina has 1 less than 3 times as many bottles of nail polish as her sister, Lucia. They have a total of 25 bottles. How many more bottles does Christina have than Lucia?

  98. Math

    There are 45 choir members going to the recital. Each van can carry 8 people. How many vans are needed?

  99. Physics

    Roller Coaster Cart Mass = 200kg String Compressed by 5m Initial Velocity 25 m/s PE = 2,500 J KE = 62,500 J Use the law of conservation of mechanical energy to find the maximum radius the loop can have before the cart falls off

  100. Health

    Why are federal & state law enforcement agencies responsible for executing search warrants? In a healthcare scenario, how would you handle this if presented one in the HIM department?

  101. social studies

    jobs, abortion and same sex marriage i need information on that

  102. Math

    need some help on an algebra question. First we had to put the different combinations of 6 rabbits in 2 cages. Like 2 rabbits in the red cage and 4 rabbits in the blue cage...etc. Then it says to write an equation using variables that represent the rabbits

  103. Math

    Iam a 5digit number my tens digit is the sum of my hundreds digits and thousands digits my tens digit is twice my ones digit. My hundreds digit is 1more than zero.my thousands digit is seven times my hundreds digit.my ten thousands digit is the same as my

  104. burnhan

    Explain how you would use a number line to round 148 to the nearest ten

  105. elementary

    use, using,eat,eating,close,moan,wave,writing,looking,dream,skate,closing,trading,cleaning,clean,write,skating,waving,look,mail,mailing. write these spelling words vowels&conosonents all spelling words are vowels.no consonents.are u correct

  106. biology question??

    explain how Eukaryotic cells are attached to eachother? why is it important??

  107. Math

    The rainfall for three months was 4.6 inches, 3.5 inches, and 4.2 inches. What was the average monthly rainfall during that time?

  108. Physics- PLEASE HELP

    A 58.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with(b) If the ball is in contact with the players head for 19 ms, what is the average acceleration of the ball? a speed of 26.0 m/s. If the player

  109. Pre-Calculus - Reiny

    Reiny you helped me with this logarithm yesterday: How did you write it out as log2 ( √A / B^3 ) Laws of logarithms combine, write as a single logarithm Need help on this question please, Im stuck, don't know where to go abouts from here: I did it on

  110. College Physics

    13. What is the magnitude of the gravitational force that acts on two particles? Assume that particle 1 (m1) is 12 kg and particle 2 (m2) is 25 kg, they are both separated by a distance of 1.2m

  111. Math

    At a certain time of day, a 5 foot 8 inch woman casts a 3 foot 1 inch shadow. How tall is a nearby tree that casts a 13 foot 7 inch shadow at the same time of day?

  112. science

    where does the earth loose energy to ??

  113. Math

    Children 13 and younger make up 1/5 of the population in the U.S. What percentage of the population is older than 13 A.80% B.60% C.40% D.20% D? According to a survey 3 out o5 5 students bring their own lunch to school. What percent of students bring

  114. science

    what type of radiation causes skin damage ??

  115. statistics

    For each of the following questions, decide whether or not the sample data can be used to construct a confidence interval. How do I go about determining if the sample data can be used to construct a confidence interval? Example: To help consumers assess

  116. Math

    Tom has $15.86 to buy marbles that cost $1.25 each. He wants to know how many marbles he can buy. What should he do after he divides?

  117. science

    what does an albedo of 1.0 mean ??

  118. math

    you are driving to a vacation spot that is 1500 miles away. Including rest stops, it takes you 42 hours to get to the vacation spot. You estimate that you drove at an average speed of 50 miles per hour. How many hours were you not driving?

  119. Algebra

    Write each repeating decimal as the sum-of two fractions. Find the sum and simplify. Verify . 0.75483 = 0.127 =

  120. science

    what can happen if there is a large solar flare like there was in 1989 and 1997 ?

  121. Physics

    An arrow is shot into the air at a velocity of 25 m/s and an angle of 32 degrees above horizontal. It lands at the same level that it was shot from. How long is the arrow in air? How far does the arrow travel?

  122. physics

    a baseball is thrown horizontally at a velocity of 35 m/s from a height of 1.5 m. How long does it take to hit the ground? how far does it travel?

  123. math

    How would I answer this question? 2 1/8-1 3/4 I can't take 1 away from 3.

  124. physics

    A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration of 1.8 rad/s2. (a) How long does it take the discus thrower's speed to get to 3.4 rad/s? (b) How many revolutions does the

  125. Math

    Tennis balls come on cans of 3. The coach needs 50 tennis balls for practice. How many cans should he order?

  126. American History

    Were the majority of states that did not ratify the Equal Rights Amendment located in the Southeast?

  127. math

    A vector equation for a given straight line is r = (i + 3j) + lambda (-i - j) Construct a vector equation for the line that does go through the point (1,2), and is perpendicular to r. and Determine the point of intersection of the two lines

  128. Finance

    Eva is 67 and unmarried. She receives $12000 a year in SS benefits and $20000 from taxable pension. She is in the 15% tax bracket and claims standard deduction. She wants to sell stock she has had for more than a year. Her cost is $6000 and its fair market

  129. Science

    humans,other mammals,birds can maintain a constant body temperature. why is this a useful adaptation? how does this explain the spread of these animals around earth?

  130. Math

    Find the parallel of the tropic of capricom latitude 23.5 degree

  131. SOCIAL STUDIES

    I REFRESE MY QUESTION. WHAT DOES OBAMA WANT FOR JOBS, SAME SEX MARAIAGE AND ABORTION

  132. Math

    850 hectare = ? km^2 850 ha (1 km/100 ha) = 8.5km^2 Is this conversions correct? not just the answer but also how I got to the answer. PLEASE let me know if im on the right track, thanks!

  133. biology

    what effect would the absense of carbohydrates have on an animal cell membrane?

  134. PHYICS

    A Football is kicked 66.6 meters in 5.39 seconds. What was the initial velocity it was kicked? magnitude and direction above horizontal

  135. Chemisty HELP ASAP

    In this problem, your answers should be mathematical expressions involving a variable. Consider an ideal gas with an absolute temperature of T1 To what temperature would you need to heat the gas to double its pressure? T2=? I got T2=2P but it is wrong

  136. Physics

    Standing at the edge of a cliff 240 m tall, you throw two balls into the air – one directly upwards at 5 m/s and another directly downwards at -5 m/s. Use conservation of energy to show that they will have the same final speed at the bottom.

  137. math 6

    Jillianknits hats for her family and friends. In the first week, she knits 4 hats. The next week, she has some help, and together, they knit four times as many hats. The following week, she has even more help, and they knit four times as many hats as the

  138. 7th grade science help the solar system Ms. Sue

    1. Most likely, ____ were formed when lava from the moon's interior flooded bowl-like regions on the moon's surface. (1 point) maria highlands craters basins 2. Depressions on the moon formed by large meteorites are called ____. (1 point) maria mountains

  139. 7th grade math Pygorean Theroem Ms.Sue please

    Explain if a triangle with the given lengths is a right triangle. 1. 18, 24, 30 2. 7, 24, 25 3. 13, 14, 15 I really do not know how to solve these problems! I have no idea how!!!! Please help!

  140. Economics

    How do I write a paper on "Why we trade with Brazil?"

  141. english

    The following arguments contain various kinds of fallacies. Evaluate each and identify the fallacy using the matching list at bottom. 1. We can recognize that athletes who participate in sports must be given special consideration in our grading system, or

  142. Physics

    Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at

  143. Chemistry

    Calculate the change in enthalpy for the following reaction: C25H52(g) + O2(g) → CO2(g) + H2O(l) I started off by balancing the equation: C25H52(g) + 38O2(g) → 25CO2(g) + 26H2O(l) Can someone help me with the rest.

  144. art history

    his enormous bulk, his red sash, his long beard, and his pointed teeth.

  145. Biology

    What is the probability that any two humans with the same parents will be identical(other than identical twins)for each parent's gametes?

  146. Pre-Algerbra

    I don't really understand this and my teacher at school is no help. Can anyone explain what I'm supposed to do here? ----- Atoms contain charged particles called protons and electrons. Each proton has a charge of +1, and each electron has a charge of –1.

  147. Biology

    What is the probability that any two humans with the same parents will be identical (other than identical twins) to make an identical zygote?

  148. algebra

    Identify the vertex and the axis of symmetry of the graph functio y=3(x+2)^2-3 Could someone please help me

  149. Biology

    How do variations arise during meiosis?

  150. CIS 210

    Your sister owns a small clothing store. During a conversation at a family dinner, she mentions her frustration with having to manually track and reorder high demand items. She would like an automated system but has a very small budget. Write a 4-5 page

  151. algebra

    Identify the maximum or minimum value and the domain and range of the graph of the function y=2(x-3)^2-4 Can someone please help me.

  152. english

    Poem Styles: IVAN THE EVIL Use story clues to create a visual or poetic representation of Ivan. Be sure to represent actual details of Ivan’s appearance as conveyed by the story, such as his enormous bulk, his red sash, his long beard, and

  153. Writing Sentences & Paragraphs

    Please help! Please correct any mistakes Your favorite cousin has moved to your town and is looking for a job. Her previous experiences are working as a cashier and sales clerk at two department stores. You know she plans to apply at similar stores in your

  154. Ms.Sue - Pygorean Theroem answers please check

    Explain if a triangle with the given lengths is a right triangle. 1. 18, 24, 30 2. 7, 24, 25 3. 13, 14, 15 4. 8, 15, 17 5. 10,24, 25 6. 15, 36, 39 Are my answers correct? Thanks. 1. yes 2. yes 3. no because 19. 10497 cannot be a triangle. Also, 19.10497 is

  155. Language Arts

    What does it mean to write a paper in APA format?

  156. Math

    The students at Blue Ridge Middle School are going on a field trip to the museum. By Friday afternoon 4/5 of the students had turned in their permission slips. What percent of the students had not turned in their permission slips A.4% B.20% C.45% D.80% D?

  157. Biology

    What is the probability that any two humans with the same parents will be identical(other than identical twins)for each parent's gametes?

  158. chemistry

    calculate the morality of THE H2SO4 solution for each of the three runs. do the three values agree closely together with each other. Part A. Titration 1 volume of unknown acid =20ml initial buret reading of NaOH =0.5 ml final buret reading of NaOH=10.0ml

  159. Math

    The following are the number of apples sold in a certain market: 96, 186, 59, 171, 62, 58, 176, 91, 183, 167, 62, and 51. How many apples should an extra store sell to have a mean of 120?

  160. Math

    Czarina is working part time at a pastry shop baking cupcakes. If she works for 30 hours in one week on the average, how many hours a day does she work?

  161. Statistics

    Thirty-two students took a 50-item Biology test. The average score obtained is 42. The next day, three students who were absent took the test and obtained 35, 39 and 43. What is the average score of the 35 students?

  162. physics

    convert an acceleration of 4.1 mi/h/s to m/s^2

  163. 7th grade math check please Ms.Sue

    1. Which set of numbers represents a Pythagorean triple? (1 point) 6, 9, 12 7, 10, 12 16, 18, 25 27, 36, 45 2. If the lengths of the legs in a right triangle are 7 and 8, what is the approximate length of the hypotenuse? (1 point) 1.4 3.8 5.4 10.6 3. Matt

  164. assessment

    5. Suppose the standard error of measurement (SEM) for the CM scale was 1.70. Would the scores of the youth who scored 21 be considered different from one another? Why or Why not?

  165. physics

    what is the particle's average velocity in the y direction vy between t=0.200s and t=0.300s?

  166. math

    Jenifers flower bed is in the shape of a right angle triangle. The shortest side is one/forth of the second shortest side. if the area is 18sqaured what are the lengths of all three sides? I NEED A ANSWER ASAP! PLEASE

  167. Anatomy

    The _____ extends from the lesser curvature of the stomach to the underside of the _____. A) alimentary B) anus C) biparietal D) chest E) greater omentum F) hips G) kidneys H) lesser omentum I) lips J) liver K) mesentery L) parietal M) peritoneum I

  168. Writing Sentences & Paragraphs

    Please help! I have this assignment and really don’t know where to begin! Please let me know all my mistakes like grammar, spelling, punctuation, sentences and any other mistakes which you think I have made. Thank you all so very much in advance!!! I

  169. chemistry

    calculate the morality of THE H2SO4 solution for each of the three runs. do the three values agree closely together with each other. Part A. Titration 1 volume of unknown acid =20ml initial buret reading of NaOH =0.5 ml final buret reading of NaOH=10.0ml

  170. Math

    The U.S. produces 25% of all beef int he world. What fraction of all beef does the rest of the world produce A.1/4 B.2/5 C.3/4 D.4/5 A?

  171. 7th grade math ms.Sue please asap!

    1. Which set represents a Pythagorean triple? (1 point) 27, 38, 42 33, 44, 55 35, 38, 42 68, 72, 81 2. Which number completes the Pythagorean triple: 12, 16, ____? (1 point) 18 20 22 24 3. A base ball diamond is square. The distance from home plate to

  172. science

    Can venus be seen at night without a telescope?

  173. Calculus II

    Fed loves polynomials with rational coefficients and only such polynomials.Suppose f(x)=square root of x. Find a polynomial P(x) that Fred will adore so that, for any x in the interval [3,5], the difference between P(x) and f(x) is less than .01 Hint: The

  174. world geo

    The statement, "Paraguay is one of two landlocked South American nations" describes what type of region? o cultural o economic o physical o political

  175. math

    Christina has 1 less than 3 times as many bottles of nail polish as her sister, Lucia. They have a total of 25 bottles. How many more bottles does Christina have than Lucia?

  176. 7th grade science

    1. Venus's surface temperature is ____ than Earth's surface temperature. cooler much cooler hotter none of these isn't the answer hotter because Venus has a denser atmosphere, so the temperature would be higher?

  177. Math 6th Grade

    I have to create a double number line graph and im not sure if i'm doing it right? Jenny can make 10 flower arrangements in 5 minutes. How many arrangements can she make in 6 min? 4 1/2 min? 3 min?. What is the unite rate?

  178. Chemistry

    What element is represented by this electron ground state configuration 4d^10 4f^14 5s^2 5p^6 5d^10 5f^14 6s^2 6p6 6d^2 7s^2 How do I figure this out

  179. math

    Jenifers flower bed is in the shape of a right angle triangle. The shortest side is one/forth of the second shortest side. if the area is 18sqaured what are the lengths of all three sides? I NEED A ANSWER ASAP! PLEASE

  180. History

    Lenin advocated a modified form of Marxism because A.Russia had little in the way of industry B.He had some latent Capitalist inclinations C.Russia had been so financially devastated by WWI that there was no capital to redistribute C? Britain's interest in

  181. math

    Question Part Points Submissions Used Verify that the function satisfies the three hypotheses of Rolle's Theorem on the given interval. Then find all numbers c that satisfy the conclusion of Rolle's Theorem. (Enter your answers as a comma-separated list.)

  182. Math(Algebra)

    If an arrow was shot at such an angle that for every second of travel a lateral change of 50 feet away from the archer was gained, how far away does the arrow land from cliff base?

  183. Math

    Tanya spend 40% of the money she received on her birthday. What fraction of her money did she not spend? A.3/4 B.3/5 C.3/8 D.3/10 B? According to past election about 2/5 of AMericans will not vote during the next presidential election. What percent of

  184. math

    If paint is sold for $ 15 a can and $20 a can and they sell 320 dollars worth of paint, how many cans of paint do they sell? I know it takes 7 cans of paint at 20 equaling 140 and 12 cans at 15 equaling 180 but I', stumped at how to write the equation

  185. world geography

    The statement, "People celebrate their birthdays on January 1st" is an example of what type of region? o climate o cultural o physical o political

  186. physics

    A 23 kg chair initially at rest on a horizontal floor requires a 370 N horizontal force to set it in motion. Once the chair is in motion, a 332 N horizontal force keeps it moving at a constant velocity. The acceleration of gravity is 9.81 m/s 2 . a) What

  187. science

    If wood weights 18 grams with a density of 0.5 what is the volume ans what type of wood is it

  188. Math

    Find, correct to one decimal place, the size of the smallest angle of the triangle which has sides of length 3,5,7

  189. english

    I am taking logic 103 and I am having problem with the week four quiz. I am kind of confuse and need help. Help!

  190. social studies

    The European Union (EU) was formed to advance the economic goals of Europe. Countries of the EU open their borders to member nations. European citizenship is extended to all, allowing people to live, work, and vote in any member nation. Member nations have

  191. english(poems)

    what is the big idea of the poem "HOW I LEARNED ENGLISH" by gregory djanikian

  192. Math

    Justin wants to use 188 ft of fencing to fence off the greatest possible rectangular area for a garden. What dimensions should he use? What will be the area of the garden? ~ A. 89 ´ 99 ; 8811 ft B. 92 ´ 96 ; 8832 ft C. 94 ´ 94 ; 8836 ft D. 93 ´ 95 ;

  193. Math

    Suppose you draw 5 cards out of a deck of 52 and get 2 spades and 3 hearts. What is the probability that the first card drawn was a spade?

  194. English HELP!!!!!

    I have to find a antonym for atmosphere. Help please!!!

  195. social studies

    A prime minister is the leader of what type of region? A) climate B) cultural C) economic D) political

  196. math

    is o.510 equal to 0.51

  197. Spelling

    What is another word for contemplate? Is it consultation; exile; impertinent; inevitable; ingenuity; martyr; muse.

  198. Chem

    The price of gold is $625 per troy ounce at this writing. How much heat (in J) is needed to raise the temperature of $5000.00 worth of gold from 29.5 oC to 70.5 oC? (1 troy oz = 31.10 g and the specific heat of Au is 25.42 J/(moloC).) Please help!

  199. French

    Can someone correct my paragraph? Write a good, 6 sentence paragraph using both the passé compose and imparfait describing a recent outing to a café or restaurant for breakfast or lunch. What did you order? How was the restaurant? La semaine dernière je

  200. physics

    A solid ball rolls along a frictionless plane. It is 4 kilograms and is moving at a velocity of 15 meters per second. If it has a completely elastic collision and transfers all of its momentum to a stationary solid ball of 14 kilograms, what will be the

  201. math

    i have 8 coins in my piggy bank. I have twice as many dimes as I have quarters. I have twice as many pennies as I have dimes. I have less than 95 cents altogether. How many of each coin do I have?

  202. math

    The total weekly cost (in dollars) incurred by Lincoln Records in pressing x compact discs is given by the following function. C(x) = 2000 + 2x - 0.0001x^2 (0≤x≤6000) (a) What is the actual cost incurred in producing the 1071st and the 1891st disc?

  203. geography

    multiple answer question Which items name a type of precipitation? O stream O snow O canal O rain O hail O steam

  204. Chemistry

    In this problem, your answers should be mathematical expressions involving a variable. Consider an ideal gas with an absolute temperature of T1 To what temperature would you need to heat the gas to double its pressure? T2=? I got T2=T1P times 2 but it is

  205. math s

    Solve 16x – 15 = –5x + 48

  206. chemistry .chemistry

    obtanin a piece of comcentrated acetic acid and 10 ml of di- water . bring the content of this beaker to a gentle boil using a low flame on the Bunsen burner . boild for about 3minutes , alow to cool and then remove the steel wool ball . what is formula?

  207. Math/Management

    Ten jobs are to be completed by three workers (Sam, Joy, and Kelly) during the next week. Each person works a 40-hour week and is paid an hourly rate: Sam, Joy, and Kelly earn $11, $13, and $14 per hour, respectively. Union rules require workers to be

  208. pre-calc

    How do I find all the real zeros of the polynomial function of these 3 ? ): 1) g(t) = 1/2t^4-1/2 2) g(t) = t^5-6t^3+9t 3) f(x) = 5x^4+15x^2+10

  209. math x

    5(1 – 3m) = 30 – 2(4m + 7)

  210. Math

    0.9 of the 6th grade graders at Sellers brought cans for the canned food drive. What % of students did not bring cans 90 10 9 1 Im not sure on this one but I think its 90

  211. math

    Hi I am trying to help my 4th grade daughter with homework and I am stuck with this question. Please help and explain how you got the answer. Thanks Jill's fish weighs 8 times as much as her parakeet. Together, the pets weigh 63 ounces together. How much

  212. Business Math

    Doreen Nathan Cosmetic sales Commission rate: 13 1/2% Month's sales: $4,230 What is the monthly commission?

  213. Math

    Alexandra has 18 yo-yos. She spent $9.00 to buy them all. She wrote the equation 18 divided 9 = y to find how many yo-yos she got for each dollar she spent. Sven has 9 yo-yos. He spent $18.00 to buy them all. He wrote the equation 18 divided 9 = y . What

  214. US history

    Why did the Iroques Legue eventually break apart?

  215. Accounting

    On June 1, 2012, Pitts Company sold some equipment to Gannon Company. The two companies entered into an installment sales contract at a rate of 8%. The contract required 8 equal annual payments with the first payment due on June 1, 2012. What type of

  216. physics

    The shock absorbers in the suspension system of a car are in such bad shape that they have no effect on the behavior of the springs attached to the axles. Each of the identical springs attached to the front axle supports 294 kg. A person pushes down on the

  217. algebra

    what are the classification of polynomials according to the number of terms they have.

  218. math alligations

    you need to prepare 180g of an 5%cream using 30% stock cream and a cream base.how much is needed for each?

  219. math

    The LCM of these three numbers is 60. The GCF is 1. If you add the numbers, the sum is 15. Select the three numbers from the following options: 2, 6, 5, 8, 4 Show your work!

  220. Math

    Grace ddrove 159 miles and used 5 3/10 gallons of gas. How far could she go with one gallon of gas?

  221. statistics

    Consider a population with µ=93.3 and σ=5.27. (A) Calculate the z-score for x=94.9 from a sample of size 12. (B) Could this z-score be used in calculating probabilities using Table 3 in Appendix B of the text? Why or why not?

  222. Physics

    An amusement park ride consists of a rotating circular platform 8.00 m in diameter from which 9.5 kg seats are suspended at the end of 2.50 m massless chains. When the system rotates, the chains make an angle θ = 31.0° with the vertical. Assume the

  223. c

    use the mean value theorem to find the c's on the open interval (a,b) such that fprime(c)= (f(b)-f(a))/(b-a) f(x)= 3xlog(base 2)x , [1,2]

  224. PHYSICS!!!!!!!!!!!!!!!!

    the height from where the water bomb will be released on the overpass is 4.5 m and the target student is 170 cm tall. the student realises that, as his target will be moving, he must release the water bomb when his friend is a certain horizontal distance

  225. math 7

    the weight of thewater in a full bathtub in a quarter ton. How many pounds is a quarter ton/

  226. Math

    Jessie’s average grade in Algebra for the first two terms is 73.5. What grade must he get in the third term to have an average of 75?

  227. CHEM AB HELP ASAP

    I have a pre lab questions that are due in a few hours and I need help. Theres several questions In the titration of 25.00 ml of a water sample, it took 20.590 ml of 4.995x10-3 M EDTA solution to reach the endpoint. The total hardness is due to one or a

  228. Math

    I have two similar triangles. The perimeter of the smaller triangle is 20. If a scale factor of 1 1/4 is used to dilate the triangle, what is the perimeter of the larger triangle?

  229. chem

    In 100. mL solution contain 5.0 mL of solute and 95 mL of a water. The concentration is

  230. Math

    The average height of Al, Anne, and Allan is 66 inches. If Arnel is included in the group, their average height becomes 70 inches. How tall is Arnel?

  231. Math/Management

    MeanBeats is a company that manufactures and sells electronic musical equipment. Their headphone product line consists of two products, Reverbia and Bscape. MeanBeats sells the headphones to retailers at $600 and $300 per pack for Reverbia and Bscape,

  232. History

    Compare the Iroquois form of government to that of the United State?

  233. chem help w/ Lab

    Weight of the mustard package Sample: 3.02 (g) Weight of the mustard package Solution: 33.3 (g) Trial #1 Trial #2 Trial #3 Weight of Mustard Package Solution Delivered (g) : 1.09 .948 .909 Weight of NaOH Solution Delivered (g) : .354 .304 .269

  234. Chemistry

    Dear sir, madam, I am having a little problem with the solution my chemistry book gives on the following problem: We have a person whose body vitamine C concentration decays according to the following formula: 1500*0,974^t. Question A is no problem, but

  235. child development

    agood technique to prevent children from talking to you while you,re observing is to.

  236. geography

    Is mexico the large north american country that the tropic of cancer cuts through?

  237. Chemistry

    In procent how much etanol with 10% metanol in water to mix because i must calculate to have liquid freeze to -20C?

  238. Chemistry

    In determing the simplest formula of lead sulfide, 2.46 grams of of lead are placed in a crucible with 2.00 grams of sulfur. when the reaction is complete, the product has a mass of 3.22 grams. What mass of sulfur should be used in the simplest formula

  239. Math

    When Catherine went to purchase a purse from a street vendor, she negotiated a purchase price that was 10% less than the $130.00 marked price, plus 6% sales tax on the purchase price. If she has $425.00 in her checking account, how much did she pay for the

  240. History

    Lenin advocated a modified form of Marxism because A.Russia had little in the way of industry B.He had some latent Capitalist inclinations C.Russia had been so financially devastated by WWI that there was no capital to redistribute C? Britain's interest in

  241. Math 8R - help!!!!!!!!!!!!!

    Multi-Step Equations Solving Equations with Variables on Both Sides 1) 5y + 4 = 4y + 5 11a + 9 = 4a + 30 2w + 3 = 4w - 5 2) 3a - 10 = 4 + a 2x - 1 = x - 3 6n + 4 = n - 11 3) 29r + 4 = 28 + 13r 7x - 11 = -19 + 3x 4) b + 3 = 2b - 7 I'm having a bit trouble

  242. SCIENCE

    WHY NO2 IN VAPOUR STATE IS COOURED AND PARAMAGNETIC, BUT THE SAME COLOURLESS AND DIAMAGNETIC IN THE SOLID STATE

  243. history

    With an increasing population, the British colonists faced? a)a shortage of land. b)a return migration to England. c) the spread of disease. d)social unrest.

  244. geography

    Please help. I think that the three seas that surround the Philippines are: The South china sea, the Philippine Sea and the Sulu sea. Is this correct? Thanks

  245. GEN 105

    • Describe how each practice activity reinforced or contradicted something about yourself

  246. algebra

    4(3d-2)=3d-5

  247. ALG 2!!!

    5 to the second power minus 4 times 4 plus 5 to the second power equals what? it should look like this kinda 5^(2)- 4 x 4+5^(2)

  248. English

    Imagine his (plight,ingratitude) penniless unemployed and with large family to support ingratitude? After so many years of (strife strand) in business politics and the family he wants only to retire to the peace and quiet of his ranch. strife? I knew that

  249. Math

    Heather worked for 15 3/4. She was paid a total of 102 3/8 dollars. What is Heather hourly wage?

  250. ALG 2!!!

    5 to the second power minus 4 times 4 plus 5 to the second power equals what? it should look like this kinda 5^(2)- 4 x 4+5^(2) please solve

  251. Science

    Which of the following represents a decimal system of measurement? 1 quart = 16 fluid ounces 1 mile = 5,280 feet 1 kilometer = 1,000 meters 1 pound = 16 ounces

  252. physics

    If a seagull flies to a height of 22.5 meters, how long will the clam take to fall? The acceleration of gravity is 9.8m/s. answer in units of sec

  253. physics

    a .77 kg book with dimensions of 28.9 cm by 20.2 cm is on a table. What force does the book apply on the table?

  254. c++

    The distance between two cities is 500 miles. Let us call these cities as CityA and CityB. Employees live in the CityA and travel to the CityB every day in the morning and come back in the evening on the same day except on Saturday and Sunday. They do not

  255. PHYSICS

    A long-straight wire carries a current and is aligned with the North-South direction. You place a compass 4 cm directly above the wire and above the North/East/South/West plane. The compass needle, which initially pointed North (far away from the wire) is

  256. math

    30 minutes to an hour wat does this mean

  257. algebra

    IMAGINE THAT A FILM CRITIC ENJOYS COLLECTING A VCD or dvd of the best movies you have seen and reviewed. create a portfolio to show the pictures and synopsis of the best movies you have seen and reviewed. make a detailed summary of the amounts spent for

  258. Physics. Help please

    A small permanent magnet is located on the x-axis with the center at cm. The magnet’s North pole is at location cm and the South pole is at location cm. A current loop is placed in the y-z plane, such that its center is at the origin. It has a radius

  259. physicss

    A cube with sides each 3cm long has 8 charges of Q = 25nC at each corner. What is the electric potential \Delta V at the center of the cube with respect to infinity, which is defined to have V=0 V?

  260. Math

    For a class C corporation in Louisiana, the amount of state income tax S is deductible on the federal return and the amount of federal income tax F is deductible on the state return. With $200,000 taxable income and a 30% federal tax rate, the federal tax

  261. Calculus

    A ladder 10 ft leans against a vertical wall. The upper end slips down the wall at 5 ft/sec. How fast is the ladder turning when it takes an angle of 20 degrees with the ground.

  262. Physics- PLEASE HELP

    A 58.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with(b) If the ball is in contact with the players head for 19 ms, what is the average acceleration of the ball? a speed of 26.0 m/s. If the player

  263. health

    as a worker,to provide care that is of a reasonable standard.identify and list the document that determine how must you provide care

  264. health

    why is it important to acknowledge loss and grief

  265. Physics URGENT!!!

    Gayle runs at a speed of 9.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snow-covered hill, that has a vertical drop of 20.0 m. After she has descended a vertical distance of 4.00 m, her brother, who is initially at rest, hops

  266. Chemistry

    Which of the following will buffer near pH=9? a. 0.5M sodiumacetate/0.5M acetic acid b. 0.5M ammonium chloride/0.5M ammonia c. 0.5M sodium dihydrogen phosphate/0.5M hydrogen phosphate i think a) 0.5M sodiumacetate/0.5M acetic acid will buffer near pH=9

  267. Science

    . Which of the following is a measure of motion, with the derived units in m/s? power force resistance speed

  268. Math 8 - homework qs. check

    2x - x = 3 - 1 1x = 2/1 x = 2

  269. Calculus

    The hypotenuse of a right triangle is 25 ft. If one of the acute angles increases at rate of 4 degrees per second, how fast is the area increasing when the angle is 30 degrees.

  270. math

    when 8 children go on a picnic,6/8 wear jeans. how many wear jeans

  271. Science

    19. Which of the following base unit definitions was changed from being based on an arc of the earth to a time interval of light? second kilogram meter candela

  272. Math

    Speedy Printing charges $23 for 200 deluxe business cards and $35 for 500 deluxe business cards. Given that the cost is a linear function of the number of cards printed, find a formula for that function and find the cost of 700 business cards.

  273. science

    need help with what are the raw materials of respiration and their products?

  274. science

    Is glucose molecules broken down in both hases of respiration?

  275. math

    how many feet are in 4 yards

  276. art

    How to mix watercolors

  277. math

    I don't know how to do this. 1 over 4 plus 2 over 8

  278. physics need help please

    There are 7 charges, each with q = -5 nC distributed on a circle with radius R=3cm. The center of the circle is at the origin. The charges are at angles 0o, 45o, 90o, 135o, 180o, -90o, and -45o. (Note: A charge at -135o is missing.) a) What is the net

  279. math

    7 – 4(x + y) + 2(x – 3y) A 7 – 2x – 7y B.7 – 2x – 10y(*) C.7 + 2x – 7y d.7 + 2x – 10y i think its be im not aure can some one check my ansswer

  280. physics need help please

    There are 7 charges, each with q = -5 nC distributed on a circle with radius R=3cm. The center of the circle is at the origin. The charges are at angles 0o, 45o, 90o, 135o, 180o, -90o, and -45o. (Note: A charge at -135o is missing.) a) What is the net

  281. math

    How much interest would john pay for a 30 day loan of 600 dollars at 8%?

  282. physics

    a 21.2 kg mass attached to a spring scale rests on a smooth, horizontal surface. the spring scale, attached to the front end of a boxcar, reads T=35.6N when the car is in motion. If the spring scale reads zero when the car is at rest, determine the

  283. us history

    why do you think some critics of the new deal feared that it's programs might lead to socialism or communism?

  284. physics

    A 13 N force with a fixed orientation does work on a particle as the particle moves through displacement . What is the angle between the force and the displacement if the change in the particle's kinetic energy is (a) +9.19 J and (b) -9.19 J?

  285. Math

    A manager bought 12 pounds of peanuts for $30. He wants to mix $5 per pound cashews with the peanuts to get a batch of mixed nuts that is worth $4 per pound. How many pounds of cashews are made?

  286. CHEMISTRY

    NH4OH + H2O =

  287. chemistry

    the density of water 20 degrees celcius is 1.00g?mL and the densityof ethylene glycol is 1.114g/mL, if 100.0mL if water is combined with 25.0mL is ethylene glycol, what would be the density of this mixture?

  288. Math

    If the pH of a solution increases by 4 (from 4 to 8), how much does the hydrogen ion concentration change? Does the change make the solution more acidic or more basic?

  289. math

    What percent of $1.00 is a nickel?

  290. science

    A 14700 kg sailboat experiences an eastward force of 29800 N due to tide pushing its hull while the wind pushes the sails with a force of 81500 N directed toward the northwest (45◦ westward of North or 45◦ northward of West). What is the magnitude of

  291. physics

    A 16000 kg sailboat experiences an eastward force of 12400 N due to tide pushing its hull while the wind pushes the sails with a force of 51900 N directed toward the northwest (45 westward of North or 45 northward ofWest). What is the magnitude of the

  292. science

    The block of mass 4.44723 kg has an acceleration of 4.6 m/s^2 4.44723 kg F is at 30◦ a What is the magnitude of F? Assume the acceleration due to gravity is 9.8 m/s 2 and the surface is frictionless. Answer in units of N

  293. math

    State the quadrant in which the terminal side of each angle lies. 1) 11pi/4

  294. Math

    Is the standard notation for 5.3 trillion. 5,333,333,333,333

  295. finance

    a company paid dividend of $7 per share and has announced that it will increase the dividend by $4 per share each of the next 4 years and then never pay another dividend again. the required rate of return is 11 percent on the company's stock. How much will

  296. Microeconomics

    The producer of X is contemplating a price change and has asked for your advice. After some empirical investigation, you conclude that the price elasticity of demand for X is 1.25. As an economist, what would you advise the producer to do in order to raise

  297. social studies

    why do you think some critics of the new deal feared that it's programs might lead to socialism or communism?

  298. Physics

    A crank of length 190mm is initially at 65 degree above the horizontal, and rotates through 35 degree towards the horizontal. A vertically downward force of 160 N acts on the outer end of the crank. Calculate the work done by the force.

  299. Math

    how do you break apart arrays?

  300. maths

    find the length of a tropic of carpicon latitude 23.5 degrees

  301. Physics

    Four forces act on a hot-air balloon, shown from the side in the figure below. Find the magnitude and direction of the resultant force on the balloon if F1 = 5050 N, F2 = 1450 N, F3 = 950 N, and F4 = 4200 N. ________° clockwise from F2

  302. Math

    Jerrod started saving money in his piggy bank. The first 2 months he saved $56. After 6 months he had saved $168. What is the depends on statement in this problem?

  303. Calculus

    A differentiable function f(x,y) has the property that f(2,2)=2 and fx(2,2)=1 and fy(2,2)=2. Find the equation of the tangent plane at the point on the surface z=f(x,y) where x=2, y=2.

  304. staticstics

    The average length of an adult blue whate is 30 meters with a standard deviation of 5.7 meters. If a sample of 31 whales is taken, what is the probability that their average lenght differs from the mean by more than 2.0 meters

  305. Math

    What equivalent fraction would you use to subtract 1/3 from 5/9?