Questions Asked on
January 27, 2013

  1. Physics

    On a particular airplane wing, air flows over the upper surface with a speed of 115 m/s and along the bottom surface with a speed of 90 m/s during flight. If the area of the wing is 140 m^2, what is the lift force on the wing? Air density is 1.29 kg/m3.

    asked by Francisco
  2. English

    I want to know how there be alliteration in this sentence. "and tighten him for slack moments" because don't alliteration mean reptition of initial consonant sounds, and this don't be like "peter piper picked a peck of pickled peppers"

    asked by Mohammad
  3. Biology-reaction time

    How can someone improve their reaction time? also what type of athlete would have a above average reaction time? Please explain why?

    asked by golnuh
  4. algebra

    Solve using the substitution method. State if there are infinite solutions or no solution. 5x + 8y = -4 x= 2 - 3y

    asked by kim
  5. English HL

    An essay about("Be quiet,"the leader hissed."they, mustn't know we are here".

    asked by Francis
  6. Physics

    240N

    asked by Peter
  7. CALCULLUS

    Question 2: If is the position of a particle in space at time .Find the angle between the velocity and acceleration vectors at time

    asked by NISARGILL
  8. Chemistry

    Write the equation for the reaction associated with the Ka2 of sulfuric acid, H2SO4. Write the equation for the reaction associated with the Kb2 of carbonate, CO32–.

    asked by Jessica
  9. Chemistry

    Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. Phases, such as (l) or (aq), are optional.

    asked by Jessica
  10. math help!

    a hockey arena has a total seating capacity of 15690.the first row of seats around the rink has 262 seats. the number of seats in each subsequent row increases by 18. how many rows of seats are in the arena?

    asked by Riana
  11. trig

    Give that tan tetha is equal to 3/4 find the values of cos tetha,cos tetha-sin theta,sin tetha.

    asked by Anonymous
  12. statistic

    Over the past 10 years, the local school district has measured physical fitness for all high school freshmen. During that time, the average score on a treadmill endurance task has been μ  19.8 minutes with a standard deviation of   7.2 minutes.

    asked by Nickie
  13. statistic

    A multiple-choice test has 48 questions, each with four response choices. If a student is simply guessing at the answers, a. What is the probability of guessing correctly for any question? b. On average, how many questions would a student get correct for

    asked by Nickie
  14. statistic

    A roulette wheel has alternating red and black numbered slots into one of which the ball finally stops to determine the winner. If a gambler always bets on black to win, what is the probability of winning at least 24 times in a series of 36 spins? (Note

    asked by Nickie
  15. Stat.

    A trick coin has been weighted so that heads occurs with a probability of p  2 3, and p(tails)  1 3. If you toss this coin 72 times, a. How many heads would you expect to get on average? b. What is the probability of getting more than 50 heads? c.

    asked by Nickie
  16. Stat.

    A national health organization predicts that 20% of American adults will get the flu this season. If a sample of 100 adults is selected from the population, a. What is the probability that at least 25 of the people will be diagnosed with the flu? (Be

    asked by Nickie
  17. writing

    y, discuss about HCPCS codes, how they originated, their use, and who is responsible for updating and maintaining them

    asked by Anonymous
  18. u of s

    A black thin-walled cylindrical can, 10.0 cm in diameter and 20.0 cm tall is filled with water at 100°C and suspended in a 20°C room. Determine the initial rate of heat transfer due to radiation, and the initial rate of change of temperature of the

    asked by cz
  19. msths

    Solve z/3 = 5/4

    asked by ravi
  20. Physics

    The modern Boeing 747 passenger jet airplane cruises at a speed up to 900 km/hr, at an altitude of 11,000 m. The cabin pressure is maintained equivalent to the atmospheric pressure at an altitude of 2,000 m. This is called the "cabin altitude". The

    asked by Francisco
  21. chemistry

    how would you prepare a 550ml of 0.350 normal calcium chloride solution

    asked by gerson
  22. Physics - Radiation, Heat Transfer

    10 sq meters of ice is floating in the Arctic Ocean in mid-Sept - 12 hours of darkness, 12 hours of diffuse sunlight at 50 watts/sq meter. Emissivity of ice = .97 temperature of the top of the ice = -20 C (253 K) Albedo of sea ice = .62 How much radiant

    asked by Robert RACookPE1978
  23. PHYSICS 1 ..'''''''''''''''''''''''' helllpppppppp

    when different loads hang on a spring, the spring stretches to different lengths as shown in the following table(a)make a graph of the applied force versus the extension of the spring.(b)by least-squares fitting,determine the straight line that best fits

    asked by JORHO
  24. Menus ration

    a perimeter of a trapezium is 55cm and its non parallel sides are 8 cm and 7cm the difference between the length of parallel sides is 5 cm. find the lengths of the parallel sides

    asked by Athirika
  25. Menusration

    a perimeter of a trapezium is 55cm and its non parallel sides are 8 cm and 7cm the difference between the length of parallel sides is 5 cm. find the lengths of the parallel sides

    asked by Athirika
  26. Life orientation

    Practices that are in contravention of the basic conditions of employment act

    asked by Muneiwa
  27. accounting

    Adam place RM2, 000 in a saving account paying 5% interest compounded annually, how much will Adam account accrue to in a)10 years b)15 years

    asked by Lily
  28. psychology

    When you make the comment, "I don't know," in the course of a discussion, this indicates that you: A. have a tolerance for uncertainty. B. are an empirical scientist. C. are evasive and opposed to further inquiry. D. accept your own ability.

    asked by Anonymous
  29. accounting

    What is the present value of RM6, 500 to be received 10 years from today if our discount rate is 10%?

    asked by Lily
  30. accounting

    What is the value of the following future amount? a)RM800 to be received 10 years from now discounted back to present at 10%.

    asked by Lily
  31. PHI 103

    CAN YOU HELP ME WITH THE ASHFORD 6 WEEK 5 QUIZ

    asked by Anonymous
  32. math

    i need someone to show the formula for this problem and amswer i have 16 not sure sally's art project is in the shape of a circle. she wants to put a piece of glitter string around the adge of her project has a radius of 4 inches, how much string will she

    asked by jo
  33. business law

    A agrees to buy such fruits and vegetables as it "might desire" from B. Does this promise to buy obligate B in anyway?

    asked by ed
  34. Physics

    Newton law of cooling and cooling collision.

    asked by Peter
  35. Grammar

    This is for my science fair project conclusion and I was wondering If it's good like that?......To sum up briefly, my hypothesis was correct I predicted that my plant that got the most sun would be the most colorful and my plants that were in the shade

    asked by Anonymous
  36. 6th grade health

    the view you have of yourself is known as your

    asked by Eduarda cardoso
  37. math

    There are 5 red balls,6 white balls and 7 green balls in a box.If one ball is taken without looking,what is the probability that it is white?

    asked by Amber lynn V. Lumayao
  38. Math

    Suppose you have a graph of a polynomial function and you can see that the function increases without bound on both left and right ends, has 4 real zereos and has 5 turning points. Based on this information, what is the minimum degree of the polynomial?

    asked by Suzy
  39. elemetary elgabra

    A tree casts a shadow 25 m long. At the same time, the shadow cast by a 57-cm tall statue is 66 cm long. Find the height of the tree to the nearest meter.

    asked by garrett
  40. Chemistry

    what are the products when water,ferric chloride and ammonium thiocyanate are combined?

    asked by Leah
  41. marcoenomics

    Assume Country X has much larger real GDP than county Y. Despite its low real GDP figure, is it possible for the standard of living, as measured by GDP per capita, in Country Y to be better than the standard of living in Country X? Please explain.

    asked by Adams
  42. Physics

    Work it out. How many joules of heat is given out when pieces of iron of mass 50g and specific heat capacity =460kgk cools from 80¡èc to 20¡èc?

    asked by Peter
  43. physics

    Find the area enclosed by the curve y=sinx and the x-axis between x=0 and x=22/7

    asked by Anonymous
  44. physics

    Find the area enclosed by the curve y=sinx and the x-axis between x=0 and x=22/7

    asked by Anonymous
  45. physics

    Find the area enclosed by the curve y=sinx and the x-axis between x=0 and x=22/7

    asked by Danish
  46. physics

    Find the area enclosed by the curve y=sinx and the x-axis between x=0 and x=22/7

    asked by Danish
  47. physics

    Find the area enclosed by the curve y=sinx and the x-axis between x=0 and x=22/7

    asked by Danish
  48. Calc

    A particle moves along the x-axis in such a way that it's position in time t for t is greator or equal to 0 is given by x= 1/3t^3 - 3t^2 +8 A) show that at time t= 0 the particle is moving to the right. B) find all values of t for which the particle is

    asked by Aparna
  49. Calc

    Line L is tangent to the graph of y= x- (x^2/500) at the point Q a) find the x coordinate of point Q B) right an equation for line L C) suppose the graph above were a hill (measured in feet). There is a 50 foot tree growing vertically at the top of the

    asked by Aparna
  50. physics

    a car starts from rest and has a constant acceleration of 2.5 m/s^2. if it travels 25m how long will it take to complete the motion

    asked by Anonymous
  51. Algebra

    -1/4(8x+2)

    asked by Theresa
  52. ELA 10

    In a full paragraph, describe the character of the professor in "Saboteur." Give at least three details from the story to support your answer. (10 points)

    asked by asley
  53. chemistry

    I need help on a balance ionic equation in chemistry Ca(NO3)2 + NaOH

    asked by Anonymous
  54. Algebra

    Can you please show me step by step to the answer you have given me. -1/4(8x+2). I still do not understand how you came up with the answer. Thank yooi

    asked by Theresa
  55. zoology

    what is the economic importance of zoanthus and Metridium?

    asked by zoanthus
  56. math

    A metalic sheet of rectangular shape with 48m*36m from each of it corner a square is cut off so as to make an open box. if length of each square length is 8m find the volume of the open box ????

    asked by TUHITUHI
  57. Physics

    A string on a guitar is supposed to vibrate at 300 Hz, but is measured at 305 Hz. By what percent should the tension in the string be adjusted to correct the tuning?

    asked by Ashley
  58. physics

    When speaker A is working the sound intensity at a particular location is 85 dB. When speaker B is working (without speaker A), it is 80 dB. What will it be if both speakers are working together?

    asked by Candace
  59. Physics

    A tuning fork of frequency 500 Hz is rotating on the edge of a disk of radius 1.2 meters. a) If the disk turns at a rate of 40 rev/min, what are the maximum and minimum frequencies heard by the listener? b) To what positions of the tuning fork do these

    asked by Abbi
  60. Physics

    Identical points on two harmonic waves with the same wavelength (0.65 meters) and frequency are the separated by a distance of 0.15 meters. What is the phase difference between the waves?

    asked by Kristy
  61. Calculus

    I'm not sure what to substitute in this question. Evaluate the integral Square root (tan^-1(x)) / (x^2+1)

    asked by Ashley
  62. physics 112

    what is meant by a change in temp of 1 degree celcius on the scale of a platinum resistance thermometer

    asked by christian
  63. Chemistry

    For the oxidation of glucose ( C6H12O6 + 2O2---6H2O +6CO2), how many moles of O2 will it take to consume 6 moles of glucose. Can someone explain it?

    asked by Jeremy
  64. stat.

    A sample consists of the following n  6 scores: 2, 7, 4, 6, 4, and 7. a. Compute the mean and standard deviation for the sample. b. Find the z-score for each score in the sample. c. Transform the original sample into a new sample with a mean of M  50 and

    asked by Nickie
  65. geometry

    if measure of angle SUT=3x+6 and measure of angle RUS=5x-4, find measure of angle SUT

    asked by Katie
  66. biochemistry

    The amino acid R has how many ionizable protons?

    asked by Poonam
  67. 7th grade math

    In 2004, about 14 percent of the estimated total population of the United States was found to be Hispanic. At that time about 1/25 of the Hispanic Population was Cuban, and about 2/3 of the Cuban population lived in Florida. What fraction of the total U.S.

    asked by Dingbat
  68. algebra

    4 divide 3 multiply 6 divide 2 minus 2

    asked by Anonymous
  69. 7th grade math

    The hypotenuse of a right triangle is 10 centimeters and one of the legs is 6 centimeters. the leg to the very left is 6 cm and the leg to the top is 10 cm. the bottom leg has a x for unknown. My teacher gave me the answer since I couldn't figure it out

    asked by Dingbat
  70. Math

    Which isn't equivalent: 3/7, 6/14, 8/21 or 12/28

    asked by Jon
  71. biochem

    Which of the following pairs of compounds would NOT make a hydrogen bond with each other? CH3 and H20 H20 and HF NH4 and HF H2O and CH3COOH all of the following would make hydrogen bonds

    asked by Jen
  72. Geometry

    A tree casts a shadow that is 70 feet long. At the same time a person is standing nearby who is 5 feet 6 inches tall and their shadpw os 60 inches long. What is the proportion and what is the height of the tree?

    asked by Doobert
  73. Calculus

    Grain is being dropped into a silo from a tall conveyor belt forming a right circular cone with diameter at the base equal to the height. The grain is being added at the rate of 10 cubic inches per second. How fast is the height changing when the height is

    asked by Sam
  74. physics

    A uniformly charged disk of radius 35.0 cm carries a charge density of 6.70 multiplied by 10-3 C/m2. Calculate the electric field on the axis of the disk at the following distances from the center of the disk. (a) 5.00 cm

    asked by Anonymous
  75. Physics

    An Olympic skier moving at 19 m/s down a 26 degree slope encounters a region of wet snow and slides 136 m before coming to a halt. What is the coefficient of friction between the skis and the snow? ( g = 9.81 m/s2)

    asked by Madison
  76. Math

    The fifth term of an arithmetic progression is three times the second term,and the third term is 10.a)What is the first term,b)the common difference and c)the 15th term?

    asked by Bethold
  77. Biology

    How does diabetes affect the brain?

    asked by Bethold
  78. Trig

    How do I prove that tan(x/2) =( plus/minus) sqrt(1-cos(x/1+cos(x))

    asked by Sarah
  79. Excel help please

    How would I write a formula to multiply the number in cell z675 times the number in cell a1

    asked by Kimberly
  80. Excel help

    How would I write a formula to multiply the number in cell k4 times the standard deviation of the numbers in cell z2 through z10

    asked by Kimberly
  81. Chemistry

    Write the equation for the reaction associated with the Ka2 of sulfuric acid, H2SO4. Write the equation for the reaction associated with the Kb2 of carbonate, CO32–.

    asked by Darrin
  82. pysics

    what is the velocity of a 1,000 kg cannon that shoots 10 kg bullets at a speed of 380 m/s?

    asked by raz
  83. math

    find the value of 8ab(a^2+b^2),if a+b=r00t10 and a-b=2root2

    asked by abhi
  84. physical

    A marathon runner runs 3km in direction 0degree and them 4km in direction 90degree. total time for the race is 2 hours.so determine the total distance covered?

    asked by Iris
  85. maths

    both my hundreds and units digits are one-half of my tens digit.the sum of my three digits is 16. what am i?

    asked by richard
  86. chemistry

    what weight of na2c03 of 95% purity would be required to neutralize 45.6ml of 0.235N acid? Who Helps

    asked by Fai
  87. physics

    a book,initially at rest is pushed along a horizontal table top by a horizontal force of 2N. After 1s it has been moved 1.5m. The force of friction is 0.4N a.how much work is done on the book by the 2N force? b.how much work is done on the book by

    asked by confidence
  88. Chemistry

    11.4mL of 0.7 M NaOH was used to titrate 5.0mL hydrochloric acid. What is the molarity of the acid? a) 0.3 b) 1.6 c) 3.9 d) 5.0 e) 8.1 Can someone answer this question and explain how to get the answer?

    asked by Alisha
  89. chemistry

    5ml of 8N HN03, 4.8ml of 5N HCL and a certain volume of 17M H2s04 are mixed together and made up to 2 liter 30ml of this acid mixture exactly neutralize 42.9ml of na2c03, 10 H2O in 100ml of water. Calculate the amount of sulphate 10m in gm present in

    asked by Fai
  90. physics

    A man of height 1.8m walks away from a lamp at a height of 6m. If the man's speed is 7m/s, find the speed in m/s at which the tip of the shadow moves.

    asked by opy
  91. Excel formula help

    Formula to multiply the number in cell 4k times standard deviation of the numbers in cell z2 through z10 I don't understand cell z2 through z10 I have never had excel (4kxz2xz10) Please write this correctly

    asked by Kimberly
  92. Ap Calculus

    Please help. A particle moves in a stright line and its acceleration is given by a(t)=6t+4. its initial position is s(0)=9 and its position when t=1 is s(1)=6. find the velocity of the particle when t=2. A. v(2)=14 B. v(2)=7 C. v(2)=4 D. v(2)=9 E. v(2)=0

    asked by Anonymous
  93. chemistry

    5ml of 8N Hn03, 4.8ml of 5N hcl and a certain volume of 17M h2s04 are mixed together and made up to 2 liter. 30ml of this acid mixture exactly neutralizes 42.9ml of na2c03, 10 h20 in 100ml of water .Calculate the amount of sulphate ion in gm present in

    asked by Fai
  94. Chemistry

    The specific heat of solid silver is 0.237 J/g degrees celsius and the heat of fusion of silver at its melting point of 961 degrees celsius is 11 J/g. Find the final temperature is 1490 J is used to heat 40 g of silver initially at 20 degrees celsius.

    asked by bbsdn
  95. chemistry

    What weight of na2co3 of 95% purity would be required to neutralize 45.6ml of 0.235n acid? I want you step by step clearly explain answer 0.5978gm

    asked by Fai
  96. Binomial Math

    A fair die is rolled four times. Calculate the probability of obtaining exactly two 5s. (Round your answer to four decimal places.)

    asked by Bersy
  97. Binomial Math

    From experience, the manager of Kramer's Book Mart knows that 40% of the people who are browsing in the store will make a purchase. What is the probability that among ten people who are browsing in the store, at least five will make a purchase? (Round your

    asked by Bersy
  98. Binomial Math

    The manager of Toy World has decided to accept a shipment of electronic games if there is no more than 1 defective electronic game in a random sample of size 17. What is the probability that he will accept the shipment if 15% of the electronic games is

    asked by Bersy
  99. Algebra with applications

    A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows: 23 said they drove alone. 30 rode in a carpool. 31 rode public transportation. 4 used both carpools and public transportation. 3 used

    asked by lyn
  100. science

    The XYZ Company makes widgets and sells to a market that is just about to expand after a period of stability. As the year starts, the widgets are manufactured at a cost of $0.75 and sold at a market price of $1.00. In addition, the firm has 1,000 widgets

    asked by jack
  101. Chemistry

    In a mountainous location, the boiling point of pure water is found to be 95°C. How many grams of sodium chloride must be added to 9 kg of water to bring the boiling point back to 101°C? Assume that i = 2.

    asked by flame
  102. Speech

    How do I post a one hundred word paragraph on how I believe computer mediated communications may affect the future of interpersonal communications ?

    asked by Kate
  103. Speech

    Post a one hundred word comment on how you believe computer mediated communications may affect the future of interpersonal communications . I DO NOT KNOW HOW TO DO THIS! PLEASE HELP

    asked by Kate
  104. History

    What are the 10 MOST special events occurred during the 1980’s involving our government?

    asked by Kim
  105. Physics, help!

    How many protons are needed to produce a total charge of 2.5*10^-15 C?

    asked by Matt
  106. math

    Find the area of the region between the curves y = sin x and y = x^2 - x, 0 ≤ x ≤ 2.

    asked by Em
  107. Math

    Find the volume generated. The region is bounded by y = 4x-x^2 and y = 8x-2x^2, and is rotated about x = 2. State which method (washer, disk, cylindrical shell) is used

    asked by Em
  108. Math

    Find the volume generated if the region bounded by y = sin 2x and y = cos x, π/6 ≤ x ≤ π/2 is revolved about the line y = 2. Use the method of washers.

    asked by Em
  109. NATIONAL Goverment

    SOMEONE PLEASE HELP!!!! PLEASE HELP ME!!! A federal system differs from a unitary system in that: ANSWER: (A) power is concentrated in one central government. sub-governments delegate power to the central authority . power is distributed between the

    asked by karen
  110. Science

    How would you get sedimentary rock and metamorphic rock from the lava after volcano has erupted? What are 4 land features that glaciers cause from their movement? Thanks for any help!

    asked by Anonymous
  111. Math

    Given that f(x) = 2x^2 - 8x + 9, 0 ≤ x ≤ 3. (a) Find the average value of f. (b) Find c such that f(average) = f(c).

    asked by Em
  112. chemistry

    How many ml of 0.05M kmn04 acidic are diluted to oxidize 2gm of fes04 is diluted solution The answer 52.63 ml I want you step by step clearly explain Thank you for Bob

    asked by Fai
  113. History

    What are the 10 MOST special events occurred during the 1980’s involving our government? I know I already posted this question. Also the american best history site does not work so please don't give it to me.

    asked by Kim
  114. algebra 1

    at a certain high school,350 students are taking algebra. the ratio of boys to girls taking algebra is 33:37. How many more girls are taking algebra than boys? - How can you write a system of equations to model the situation? - Which equation will you

    asked by lucy
  115. Physics

    The speed of the head of a redheaded woodpecker reaches 3.4 m/s before impact with the tree. The mass of the head is 0.060 kg and the average force on the head during impact is 5.0 N. a)Find the acceleration of the head (assuming constant acceleration) (b)

    asked by David
  116. Math

    If the probability that a certain tennis player will serve an ace is 1/4, what is the probability that he will serve exactly two aces out of four serves? (Assume that the four serves are independent. Round your answer to four decimal places.)

    asked by Bersy
  117. cultural diversity

    NAEYC supports "third space" thinking as a desirable technique for use in A. stimulating children's right-brain processes. B.enhancing staff performance in the early childhood setting. C.Resolving conflicts, especially those involving cultural issues.

    asked by Rashmi
  118. physics

    A cement block accidentally falls from rest from the ledge of a 51.7-m-high building. When the block is 14.9 m above the ground, a man, 2.05 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have to get

    asked by Lauren
  119. Chemistry

    How many grams of sucrose are needed to make 875 mL of a 39.0% (w/v) sucrose solution?

    asked by Chemistry
  120. Math

    Let X be the number of successes in five independent trials of a binomial experiment in which the probability of success is p = 3/5. Find the following probabilities. (Round your answers to four decimal places.) (a) P(X = 4) (b) P(2 ≤ X ≤ 4)

    asked by Bersy
  121. Physics

    A baseball is dropped from a tall building and takes 4.1 seconds to hit the ground. From what height was the ball dropped?

    asked by George
  122. Language

    What are some cool facts baout Quebec City in the Winter and what are the main sports people play?

    asked by SchoolKid
  123. Math

    Suppose 30% of the restaurants in a certain part of a town are in violation of the health code. A health inspector randomly selects six of the restaurants for inspection. (Round your answers to four decimal places.) (a) What is the probability that none of

    asked by Bersy
  124. Math

    Suppose 30% of the restaurants in a certain part of a town are in violation of the health code. A health inspector randomly selects six of the restaurants for inspection. (Round your answers to four decimal places.) (a) What is the probability that none of

    asked by Bersy
  125. math

    Dan has 5 lb of rhubarb. He has 4 rhubarb recipes, and uses 1/4 of his rhubarb in each. How many pounds of rhubarb are in each recipe? Please answer and explain.

    asked by Anonymous
  126. math

    1. If 2x/5y=6,what is the value of y, in terms of x ? 2. 11/4-a=3 , What is the value of a in the equation ?

    asked by john
  127. Calculus

    The half life of a certain radioactive substance is 10 years. How long will it take for 18 gms of the substance to decay to 6 gms? A. 6 ln 10 years B. 10 ln 6 years C. 10 (ln 3)/(ln 6) years D. 18 ln 10 years E. 10 (ln 3)/(ln 2) years

    asked by Anonymous
  128. math

    Identify the solution(s) of the system of equations, if any. -3x -4y = 2 8y = -6x – 4 a) infinitely many solutions b) (-16/9, 5/6) c) (-2/3, 0) d) no solution

    asked by monet
  129. math

    Identify the solution(s) of the system of equations, if any. 2x + 5y =10 Y = 2 – x a) (-2,0) b) (2,0) c) (0,-2) d) (0,2)

    asked by monet
  130. math

    Identify the solution(s) of the system of equations, if any. X + 2y = 4 9x – 4y = 3 a) (1, 2/3) b) (1, 3/2) c) (2/3, 1) d) (3/2,1)

    asked by monet
  131. math

    Identify the solution(s) of the system of equations, if any. -2x-4y=1 12y=-6x-3 a) no solution b) (0,-1) c) (-1,0) d) infinitely many solutions

    asked by monet
  132. math

    Consider the following system of equations. Y = 3x – 7 Y - 3x = 5 a) The system of equations is inconsistent. b) The system of equations is dependent. c) The system of equations is independent. d) none of these

    asked by monet
  133. math

    A. Mandy buy a sweater that is on sale for 20% less than the original price, and then she uses a coupon worth an additional 15% off of the sale price. What percentage of the original price has she saved ? B. If the price of a stock increases by 40% and

    asked by gary
  134. physics

    An 80kg astronaut has a weight of 120N. How many radii above the earth is he?

    asked by Cassidy
  135. cist1305

    third edition exercise 2 an object oriented approch to programming logic and design

    asked by tammy
  136. Creative Writing

    How do you describe a pouty face in writing?

    asked by Millie
  137. Physics

    At a certain time a particle had a speed of 16 m/s in the positive x direction, and 2.2 s later its speed was 30 m/s in the opposite direction. What is the magnitude of the average acceleration of the particle during this 2.2 s interval?

    asked by Patricia
  138. Economics

    a firm in a purely competitive industry is currently producing a 1000 unir per day at a total cost of $450. if the firm produced 800 units per day, it total cost will be $300, and it it produced 500 units per day, it total cost will be $275. Requirements:

    asked by Mary
  139. chem-ph

    What range on the pH scale is considered very acidic, acidic , and slightly acidic. Also what range is considered very basic, basic, slightly basic.

    asked by chimer
  140. hippa

    define to duty to report in healthcare cconfidentiality and why is this duty so critical

    asked by Anonymous
  141. math

    1. If x people working together make a total of y dollars after an hour of work. how much money will z people make if they work 4 hours at the same rate per person ? 2.Each of the n members of an organization may invite up to 3 guests to a conference. What

    asked by gary
  142. math

    My son has been given the collinear problem below that has be stumped two folds. 1- By trying to solve the problem using (y2-y1)/(x2-x1)=slope -- and then, find the (b) in y=mx+b for two points takes way way too long to be a 7th grade probem. My son has

    asked by sally
  143. please help!

    How do you believe humans can best,avoid attribution errors ?

    asked by Kate
  144. math

    The sum of four consecutive multiples of 5 is 230. What is the greatest of these numbers ?

    asked by john
  145. AP calculus

    ∫[0,x^(3),(t)/√(1+t^(3)),] Find the derivative of the integral. A. (3(x^3))/((1+(x^9))^0.5) B. (x^3)/((1+x^9)^0.5) C. (3x^3)/((1+x^3)^0.5) D. (5x^3)/((1+x^6)^0.5) E. (3x^5)/((1+x^3)^0.5)

    asked by Anonymous
  146. AP calculus

    ∫[0,x^(3),(t)/√(1+t^(3)),] Find the derivative of the integral. A. (3(x^3))/((1+(x^9))^0.5) B. (x^3)/((1+x^9)^0.5) C. (3x^3)/((1+x^3)^0.5) D. (5x^3)/((1+x^6)^0.5) E. (3x^5)/((1+x^3)^0.5) I think the answer is A. Can you check my answer please?

    asked by Anonymous
  147. Physics

    At a certain time a particle had a speed of 16 m/s in the positive x direction, and 2.2 s later its speed was 30 m/s in the opposite direction. What is the magnitude of the average acceleration of the particle during this 2.2 s interval?

    asked by Patricia
  148. MATH

    The median number of medals won by these 12 countries is 14.5. If the United States of America's medal count is deleted from this data set, what is the median number of medals for the remaining countries?

    asked by BRAXTON
  149. math

    a rectangular sheet of glass is 24 inches long and 18 inches wide. a glazier wants to cut the glass along its diagonal to make it a triangular windowpane. What will be the dimension of the windowpane.

    asked by ps211
  150. physics

    A 52.0 g ball of copper has a net charge of 2.1 µC. What fraction of the copper's electrons have been removed? (Each copper atom has 29 protons, and copper has an atomic mass of 63.5.)

    asked by taryn
  151. Math

    It is estimated that residents in 60% of households in town own a digital camera. If 10 homes are randomly selected, what is the probability that no more than 5 own digital cameras?

    asked by Bersy
  152. Statistics

    Mrs. Marble gave her 5th grade class a math test. The scores reflect a relatively normal distribution. The mean score for the group was 80 with a standard deviation of 8. Based upon this information, answer the following questions: Bobby scored exactly two

    asked by Susana
  153. English

    High I need to describe Rocky Mountains from my view but i never saw them. Can someone please help me to write 2 sentence description of rocky mountains. Our teacher told us it should be in Imagery Format. Please Help!!!!

    asked by Nina
  154. Chemistry (Biochem)

    I'm given two pictures looking down the alpha helices of a coiled coil dimer of alpha-keratin. I'm asked to identify three statements out of the following that are true. My guesses are 2, 3, and 6. 1. Leu-Glu-His-Val-Cys-Lys-Ser is a likely repeat in the

    asked by Robert
  155. Comp156

    I summited my paper and I am still not sure what I am doing wrong. What is biblograpgic text ?

    asked by connie
  156. Calculus

    Estimate the following limit by substituting smaller and smaller values of h. lim 8^h-1/h h->0

    asked by Mike
  157. Calculus

    Determine the values of x, if any, at which each function is discontinuous. At each number where f is discontinuous, state the condition(s) for continuity that are violated. f(x)= x+5 if x is less than or =0 -x^2+5 if x>0

    asked by Paige
  158. math

    1. If x people working together make a total of y dollars after an hour of work. how much money will z people make if they work 4 hours at the same rate per person ? 2.Each of the n members of an organization may invite up to 3 guests to a conference. What

    asked by gary
  159. math

    a certain mountain has an elevation 19580 feet in 1907 the glacier on its peek covered 8 acres by 2002 this glacier had melted to 1 acre assume the glacier melted at a constant rate each year find this yearly rate

    asked by max
  160. biology

    1. discuss the mechanisms that organisms undergo to accomplish morphogenesis 2. Describe the contributions of drosophila and nematodes in advancing understandings of development

    asked by Nick
  161. math

    A bag contains fifty slips (small pieces of paper) with the numbers 1, 2, . . . , 50 written on them (One number on each slip!). Your friend writes down ten numbers from 1, 2, . . . , 50 on a sheet of paper, and then you draw—without

    asked by jane
  162. math

    Suppose you roll a fair die 18 times. (a) What is the sample space? (b) What is the probability that each number from 1 to 6 appears exactly thrice? (c) What is the probability that the number 1 appears exactly twice, 3 appears exactly four times, and 5

    asked by Nikki
  163. math

    Consider the experiment of choosing the top 7 cards from a shuffled deck in two ways: (a) Without replacement. 1. What is the sample space? 2. What is the probability that you get only red cards? (b) With replacement. 1. What is the sample space? What is

    asked by Laura
  164. calculus

    Determine the values of x, if any, at which each function is discontinuous. At each number where f is discontinuous, state the condition(s) for continuity that are violated. f(x) = x+5 if x0

    asked by Paige
  165. math

    1. when z is divided by 8, the remainder is 5. What is the remainder when 4z is divided by 8 ? 2. If n is an integer, which of the following must be odd ? A. 3n-5 B. 3n + 4 C. 4n + 10 D. 4n - 5 E. 5n + 7

    asked by gary
  166. calculus

    Find the values of x for which each function is continuous. 1.) f(x)= 2x+1/x^2+x-2 2.) f(x)= x if x is less than or =1 = 2x-1 if x>1

    asked by Paige
  167. statistics

    For a particular sample of 53 scores on a psychology exam, the following results were obtained. First quartile = 44 Third quartile = 68 Standard deviation = 8 Range = 55 Mean = 54 Median = 54 Mode = 71 Midrange = 64 I. What score was earned by more

    asked by Mandy
  168. math work sheet

    I do not get my math !!!!!!! I mean when it says like a number equals blank percent of a number 13 equals % of 16 what do i do

    asked by Anonymous
  169. Math

    If a wheel has a nail stuck in the tire, the tire is 60m in diameter and the wheel drove R -234(1,0) how far did the nail travel?

    asked by Ronald
  170. math

    what is the relative error of a distance given as 550cm plus or minus 24.2cm?

    asked by alicia
  171. MATH HELP PLEASE

    $9000 invested at an APR of 9% for five years. In interest is compounded annually, what Ia the amount of money after 5 years?

    asked by Dave
  172. Information Technology

    explain how facebook has used two (2) design elements to enhance its appearance and Justify your response in terms of either efficiency (cost, time or effort) or effectiveness (quality of output, accuracy, presentation and comprehensiveness).

    asked by Selma
  173. math worksheet

    Ok i have one more question how would you solve 5 equals % of 12

    asked by raina
  174. Physics

    Draw an open circuit that consists of 2 sets of 2 cells connected in series, connected in [arallel with each other. Add a variable resitance R1 in series with a set of 3 light bulbs r2, r3, r4 in parallel with each other. Insert an ammeter and a voltmeter

    asked by Summer
  175. English

    Can you tell me what is the culture and tradition in Boise, Idaho like ?

    asked by Leyla
  176. math

    First year profits of a business were $900 . Second year profits were $1200 . What percent of the first year profits were the second year profits.

    asked by Anonymous
  177. math

    It cost $15.00 to buy 150 sheets of brand A's paper. it cost $19.25 to buy 175 sheets of brand B's paper. Which brand has the better value and by how much?

    asked by alicia
  178. math

    1. when z is divided by 8, the remainder is 5. What is the remainder when 4z is divided by 8 ? 2. If n is an integer, which of the following must be odd ? A. 3n-5 B. 3n + 4 C. 4n + 10 D. 4n - 5 E. 5n + 7

    asked by gary
  179. math

    find the slope intercept form for the line satisfying the following conditions: y-intercept=2 y-intercept =2/3

    asked by max
  180. World History

    Ancient Egypt has long captured the imaginations of ordinary people, not just historians. There seems to be a fascination with Egypt even more than other ancient cultures. Briefly discuss why you think that Egypt has continued to intrigue people.

    asked by Gregory
  181. MATH

    48people in 6vans;what is the rate per unit

    asked by DREA
  182. to the math

    Thankz !!!!!

    asked by Anonymous
  183. Accounting

    Hello, I’m having a difficult time understanding how to adjust the following unadjusted accounts: A/R …………………………………..480,000 Accum. Depr, building………116,000 Accum. Depr, equipment…332,000 Advance

    asked by MK
  184. math

    Louise travels 10 miles in 15 minutes and alice drives 23 miles in 30 minutes. who is faster?

    asked by Joanne
  185. math

    in order to be able to ride a roller coaster you must be 48 inches tall .which inequality represents this situation?

    asked by Christina
  186. math

    A map indicates that two cities are 160 miles apart. The scale of the map is 1/2 inch= 20 miles. 1. how many inches apart are the cities on the map. 2. Another map show the two cities has a scale of 3/4 inch =20 miles. How many inches apart are the two

    asked by alicia
  187. MATH HELP

    $1000 invested at an APR of 9% for 9 years. If interest is compounded annually, what is the amount of money after nine years?

    asked by Dave
  188. Physics

    What is the formula for the force experienced by a moving charge q whose velocity v forms an angle è with a magnetic field B?

    asked by Physics fail
  189. Chemistry

    The specific heat capacity of butanone is 1.69J/grams Celsius and it's boiling point is 79 Celsius. If 1.250g of butanone at 15 Celsius is heated by adding 100J of energy, will it boil

    asked by Paul
  190. World History

    Please read Chapter 2 in the textbook The First Complex Societies in the Eastern Mediterranean, ca. 4000-550 B.C.E. (pp. 22-43) and answer the following questions: 1. The Hittites were considered to have military superiority at the time, and they were a

    asked by Gregory
  191. I NEED MATH HELP

    $24,000 is invested for 3 years with an APR of 2% and daily compounding. Balance in the account after 3. years is $ ___

    asked by Dave
  192. chemistry

    Assuming equal concentration rank these by freezing points, Na3PO4, Li2Co3,NH4Cl, and Sn(NO3)4

    asked by chelsea
  193. math

    when it came to pass out valentines each of the 24 students had valentine to give to the other students in the class how many total valentines will be passede out?

    asked by mandy
  194. HELP ME MATH PLEASE

    $1000 invested at an APR of 9% for 9 years. If interest is compounded annually, what is the amount of money after nine years?

    asked by Dave
  195. MATH I NEED HELP

    $24,000 is invested for 3 years with an APR of 2% and daily compounding. Balance in the account after 3. years is $ ___

    asked by Dave
  196. math

    Increased from 50% to 60% . percent of increse . Do i mutiply then divide ?

    asked by keara
  197. ACCOUNTING (Advance Sales)

    Hi: I am unsure of how to adjust Advance Sales. For Year End, DEC 31, 2011. If my Unadjusted Balance for advance sales is $324,000 and I am told the following: 75% of the balance in Advance Sales is for garments to be made and delivered in 2012; the

    asked by Anon
  198. math

    My numerator is 10 less than my denaminator. I am equal to 3/5

    asked by Anonymous
  199. Math6

    A gallon of water wighs 8 1/3 lb. How much does 1 1/5 gallon of water weigh? How do I figure this out?

    asked by Jared
  200. Math help

    3/14 of 10/9 = 5/21 is this right??

    asked by Moby
  201. calculus

    integrate (1)/(-4ln)3x)^3 -27x^2 cuberoot-3x^3-5 and using the graph y=squareroot of x which points are closest to (6,0). thank you!

    asked by Shea
  202. NEED MATH HELP

    $3000 invested at an APR of 5% for 7 years. If interest is compounded annually , what is the amount of money after 7 years?

    asked by Dave
  203. maths

    Suppose you have $9000 to invest and you invest part of it ($×) in a high risk venture at 11.5% per annum and the remainder with the bank at 4.5% per annum, both for one year. 1) write an algebraic expression for the amount of money invested at 4.5% 2)

    asked by bryan
  204. NEED HELP MATH HELP

    $3000 invested at an APR of 5% for 7 years. If interest is compounded annually , what is the amount of money after 7 years?

    asked by Dave
  205. NEED HELP MATH HELP

    $3000 invested at an APR of 5% for 7 years. If interest is compounded annually , what is the amount of money after 7 years?

    asked by Dave
  206. math

    evaluate f(x) at the given values of x. f(x)=2. x=-11,5/2

    asked by max
  207. MATH HELP

    A $2,000 deposit at an APR of 5.4% with quarterly compounding for 8 years. The amount after 8 years will be??

    asked by Dave
  208. Physics

    A 0.35 m2 coil with 50 turns rotates at 5 radians per sec2 in a magnetic field of 0.6 Tesla. What is the value of the rms current in the coil if the coil has the resistance of 3.3 Ù? Have no idea how to do this...

    asked by unknown
  209. chemistry

    Assume you used 0.200g of salicylic acid and 0.480mL of acetic anhydride, and you obtain 0.152g of pure, recrystallized, dry aspirin. Calculate the percent yield.

    asked by Mec
  210. English

    1. Billy Elliot is a 11-year-old boy who lives in a small town in England. (What does 'in England' modify? Does it modify 'lives' or 'a small town'?) 2. She asks him to take ballet class. 3. She asks him to take a ballet class. 4. She asks him to take the

    asked by rfvv
  211. math HELP!

    Kara's custom tees experienced fixed costs of $300 and variable costs of $5 a shirt. write and equation that can be used to determine the total expenses encountered by kara's custom tee's. Let x be the number of shirts and let C(x) be the total cost of

    asked by max
  212. English

    I feel something very hot, like a fire inside my body. (What does 'in side my body' modify? Does it modify 'feel' or does it modify 'a fire'?) 2. Thank you. - It's nothing. - Think nothing of it. (Are both answers used properly?)

    asked by rfvv
  213. MATH

    In Marissa's Calculus course, attendance counts for 5% of the grade, quizzes count for 15% of the grade, exams count for 60% of the grade, and the final exam counts for 20% of the grade. Marissa had 100% average for attendance, 93% for quizzes, 82% for

    asked by Kristina
  214. MATH PLESE

    A $2,000 deposit at an APR of 5.4% with quarterly compounding for 8 years. The amount after 8 years ?? I need to find what the amount would be after 8 years please help

    asked by Tommy
  215. Math

    The following data represents the high-temperature distribution for a summer month in a city for some of the last 130 years. Treat the data as a population. Temperature Days 50-59 4 60-69 309 70-79 1428 80-89 1485 90-99 393 100-109 8 According to the

    asked by Kristina
  216. Chem

    How can the concept of specific heat capacity of water be used to explain the heating and cooling patterns if the oceans and the climate on the planet?? Can someone please explain this to me it would really help a lot.

    asked by Emily
  217. please help!

    How do you believe humans can, best, avoid "attribution" errors?

    asked by Kate
  218. Math help

    You buy clothing at a sale. You buy sneakers at 2/3 of their original price of $60, a sweater at 7/10 of its original price of $35, and a jacket at 5/6 of its original price of $45. Answer each question and show all your work. a. How much money did you

    asked by Sammy
  219. Math 6 help ??????

    teacher brings 3 gallons of juice on a field trip. There are 36 students on the trip. a. How many fluid ounces of juice does the teacher bring? Show your work. b. Does the teacher have enough juice to give each student a 12-fluid ounce glass of juice?

    asked by Carrie
  220. Fractions

    When you use counters to find 1/4 of 8, how do you know how many groups to make?

    asked by Keiona
  221. College Algebra

    Hello I need help with this problem. I need to identify if the equation is identity, contradiction, or conditional equation. -(5x-3)+2x=11-4(x+2)

    asked by Kristen
  222. Physics blehhhh

    A 0.35 m2 coil with 50 turns produces a maximum emf of 45 volts in a magnetic field of 0.4 Tesla. What is the speed of rotation of the coil?

    asked by anonymous
  223. math

    how to determine the acute angle between the line 2x+3y=6 and the y axis?

    asked by Riana
  224. Help on my math question

    A $2,000 deposit at an APR of 5.4% with quarterly compounding for 8 years. The amount after 8 years ?? I need to find what the amount would be after 8 years please help This not Dave my name is Tommy I don't even know who Dave is and I'm sorry if you think

    asked by Tommy
  225. physics

    Three point charges are arranged along the x-axis. Charge q1 = +2.75 µC is at the origin, and charge q2 = -5.25 µC is at x = 0.220 m. Charge q3 = -6.50 µC. Where is q3 located if the net force on q1 is 7.50 N in the −x-direction?

    asked by figo
  226. Chemistry

    I'm asked to tell which of the following peptide segments is most likely to be part of a stable Alpha Helix at physiological pH? Only 1 can be chosen 1. gly-gly-gly-ala-gly 2. gly-arg-lys-his-gly 3. pro-leu-thr-pro-trp 4. lys-lys-ala-arg-ser 5.

    asked by Mark
  227. Physics

    A current-carrying conductor of length 0.8 m is placed perpendicular to the direction of the magnetic field of 0.6 Tesla. What is the value of the current in the conductor if the conductor experiences a force of 1.2 N?

    asked by Physics fail
  228. Math

    two cards are drawn from a deck of cards. Once a card is drawn, it is not replaced. Find the probability of drawing a queen followed by a king.

    asked by Jesse
  229. College Algebra

    Solve for the specified variable in each formula or literal equation Sn=n(a1+an/2) for n (sequences)

    asked by Kristen
  230. Physics

    A proton moving with a speed of 200 m/s enters perpendicular to the direction of the magnetic field and experiences a force of 2x10^-18N. What is the magnitude of the magnetic field? any help is reallya appreciated

    asked by anonymous
  231. I don't understand how you did it help

    A $4000 deposit at an APR of 5.6% with a quarterly compounding for 8 years . The amount after 8 years would be ???

    asked by Tommy
  232. chemistry

    What is the heat of combustion of ethane, C2H6, in kilojoules per mole of ethane?

    asked by superman
  233. Algebra

    LCD of x/x2+3x , 2x/x2-3x

    asked by Alyssa
  234. Math, volume

    How do you find the volume inside the cylinder but outside the sphere? H=12cm.

    asked by Miranda G.
  235. Math

    There are18 boys and 20 girls in a class. What is the ratio of girls to boys?

    asked by Jo
  236. Spanish

    unscramble- amiaramtdrt

    asked by Hazel
  237. 6th grade math

    5ft 3 in. – 2ft 9 in. = ??

    asked by Kat
  238. Math help please?

    You have 2 2/3 cups of dried fruit to divide evenly among 3 children. How many cups of fruit will each child receive? what do I do??

    asked by Cameron
  239. Math on time

    Trying to understand how to solve this? Paige spends 1 hour on her homework. She spends equal amounts of time on all subjects. If Paige spends ½ hour on Spanish, how many subjects does she study?

    asked by Jake
  240. Math

    Show that each sequence is geometric. Find the common ratio and write out the first four terms. (Can you explain how to do it too?) > {(5/2)^n) > {(3n/9)} > {3^2n}

    asked by Avery
  241. Math

    Please check my answers. 1. John Gray bought a basic car for $8,250.00, with options that cost $324.00. There's a 6% sales tax in his state and a combined $50.00 license and registration fee. What was John's total cost? A. $9,138.44 B. $10,000.00 C.

    asked by Anonymous
  242. math

    How many solution sets do systems of linear inequalities have? Do solutions to systems of linear inequalities need to satisfy both inequalities? In what case might they not?

    asked by monet
  243. Physics

    What force of friction would be felt between a 5 kg sled and the ground if a 20 N force is needed to cause it to accelerate at a rate of 1.3 m/s squared?

    asked by Lacey
  244. Help math

    $4000 invested at an APR of 9% for 10 years What is the amount of money after 10 years

    asked by Tommy
  245. American History

    Why did most of the Cherokees oppose the treaty of New Echota.

    asked by Rayyan
  246. Chemistry

    Let say Pb(NO3)2 combine with FeCl3, would this yield PbCl + Fe(NO2)3? Thanks

    asked by Shadow
  247. Physics

    A glass is slid across a bar top and eventually comes to rest. if the coefficient of friction between the glass and bar top is .32 what is the acceleration it experiences?

    asked by Lacey
  248. Physics

    a 60 kg boy on a sled reaches the bottom of a hill traveling at 8 m/s, if he comes to a stop at 20 m along this flat stretch of snow what is the coefficient of kinetic friction between the sled and the ground? (hint: find the acceleration first)

    asked by Lacey
  249. Risk Management

    What challenges does GRC face from an implementation standpoint within organizations? Does this vary based on industry type, culture, or size? How so? What ways can this be addressed?

    asked by Sally Martinez
  250. sicence

    The following elements as alkali, alkaline-earth or transition metals based on their positions in the periodic table: A:) iron , Fe. C:) strontium, Sr B:)potassium, k d:) platinum, Pt

    asked by makayla
  251. math

    tilissa was on the middle rung of a ladder.she went up 3 rungs,thendown 5 rungs and then up 7 rungs where she rested.later she climbed up the remaining 7 rungs on the ladder.how many rungs did the ladder have?

    asked by francis
  252. Intermediate reading

    Can you help me with the sentence check 2 Chapter 17 and 18 in the improving vocabulary skill workbook?

    asked by lisa
  253. help? math ?

    1. when z is divided by 8, the remainder is 5. What is the remainder when 4z is divided by 8 ? 2. If n is an integer, which of the following must be odd ? A. 3n-5 B. 3n + 4 C. 4n + 10 D. 4n - 5 E. 5n + 7

    asked by gary
  254. History

    Fill in the blank. By the 1850s, railroads were beginning to ___________ canals for transporting goods.

    asked by Emma
  255. English

    1. Peggy and Maddie felt sorry about teasing Wanda. = Peggy and Maddie felt sorry that they teased Wanda. 2. Peggy and Maddie felt sorry about having teased Wanda. = Peggy and Maddie felt sorry that they had teased Wanda. (What is the difference between #1

    asked by rfvv
  256. Science

    A pH of 1.5 is _____ times more acidic than a pH of 4.0.

    asked by Anonymous
  257. Math

    I have to find the quotient of 6 divided by 1/5 So I write 1/6 x 1/5 to solve?

    asked by Livi
  258. science

    an iron supplement is used to treat anemia and 50 mg of FE is required per tablet. If the iron compound used in th tablet is FeSO4.7H2O,what mass of this compound would be required per tablet to provide the desired amount of Fe?

    asked by ngela
  259. physics conceptual

    The tires of a car support the weight of a stationary car. If one tire has a slow leak, the air pressure within the tire will _______ with time, the surface area between the tire and the road will ________ with time, and the net force the tire exerts on

    asked by Julie
  260. please help!

    How do you believe computer mediated communications may affect the future of human communications? PLEASE HELPP !!!!

    asked by Kate
  261. Math is this right?

    5/28 divided by 1/7 = ? 5 Do I flip the second fraction only when its division then times across? 5/28 x 7/1 = 35/28 or 28/5 x 7/1 = 196/5 = 5/196

    asked by Livi
  262. Help Please! Science

    Stomach acid (1.5) is 750 times for acidic than tomatoes (4.0). Can you explain to me why it is 750 times?

    asked by Anonymous
  263. Chemistry

    1.What is the pH of a solution containing 0.042 M NaH2PO4 and 0.058 M Na2HPO4 ? The pKa of sodium phosphate is 6.86. pH = 6.86 + log [0.058] / [0.042]; pH = 6.86 + 0.14; pH = 7.00 That is my answer to the above question. The following question is what I am

    asked by Blake
  264. please help!

    How do you believe computer mediated communications may affect the future of human communications? PLEASE HELPP !!!!

    asked by Kate
  265. Physical Science

    A hot dog bun (volume 240 cm3) with a density of 0.15 g/cm3 is crushed in a picnic cooler into a volume of 195 cms. What is the new densitu of the bun?

    asked by J Richard
  266. math

    if a river flows south at 10 km/h and a boat moves north against the current at a rate of 18km/hr, what is the net actual speed of the boat in the water

    asked by salman
  267. math

    How many gallons of organge juice are in a full size family jug? I think 1 gallon?

    asked by Lilly
  268. math

    7 3/5 ft = how many yards?? How do I do this??

    asked by Sammy
  269. Math 6

    I am stuck. Mike's truck engine holds 1 1/4 gallons of oil in the engine now, how many more quarts of oil does Mike need to add to fill the engine to capacity? Having trouble on do I subtract or?? what do I do?

    asked by Moby
  270. CHM

    Which of the following is not an example of a physical change? is this the right Answer accidentally leaving a piece of toast in the toaster until it is completely black

    asked by Jakey
  271. CHM

    Which of the following events are not examples of a chemical reaction? atoms of gold turning into atoms of iron conversion of methane, which contains carbon and hydrogen, and oxygen into carbon dioxide and water

    asked by Jakey
  272. Help math

    recipe calls for 4 pounds of fruit. You have 60 ounces of fruit. a. Do you have as much fruit as you need? b. If not, how much more or less fruit do you need? I said needs more fruit and what I am stuck with his b?? 3.75

    asked by Moby
  273. Physics: Buoyancy

    A crane lifts the 23000 kg steel hull of a ship out of the water. Determine the following. (a) the tension in the crane's cable when the hull is submerged in the water

    asked by Seth
  274. Physics: Buoyancy

    A crane lifts the 23000 kg steel hull of a ship out of the water. Determine the following. (a) the tension in the crane's cable when the hull is submerged in the water

    asked by Seth
  275. Math (:

    Use the distributive property to rewrote each algebraic expression 4(x+2) 3(x+7) 5(2x+7) Help ? Thanks

    asked by Smr
  276. science

    What is science

    asked by jean
  277. CHM

    In the chemical formula of ammonium sulfate, (NH4)2SO4, how many hydrogen atoms are present? 4

    asked by jakey
  278. Physics

    Two objects are connected by a light string that passes over a frictionless pulley as in the fi gure. One object lies on a frictionless, smooth incline. In the figure, m1 = 8.48 kg, m2 = 4.84 kg, and  theta = 40.2 degrees . When we let go of the mass m1,

    asked by Lindsey
  279. Math question

    How many gallons of organge juice are in a full size family jug? I think 1 gallon?

    asked by Lily
  280. Math help?

    I am stuck. Mike's truck engine holds 1 1/4 gallons of oil. If there are 3 quarts of oil in the engine now, how many more quarts of oil does Mike need to add to fill the engine to capacity? Having trouble on do I subtract or?? what do I do

    asked by Moby
  281. pre-calc

    The sum of two numbers is radical 3. Find the largest possible value for their product

    asked by seria