# audrey

Popular questions and responses by audrey
1. ## algebra

Four different accounts are described below. Order the accounts according to their values after 20 years, from greatest to least. 1.You deposit 1500\$ in an account that earns 5% annual interest compounded quarterly. 2. You deposit 1500\$ in an account that

2. ## Calculus

A water trough is 5 m long and has a cross-section in the shape of an isosceles trapezoid that is 30 cm wide at the bottom, 70 cm wide at the top, and has height 40 cm. If the trough is being filled with water at the rate of 0.2 m3/min how fast is the

3. ## Trig

How do you convert rectangular equations into polar equations? If x4−y4=xy , then r2=atan(b); What is a? What is b?

4. ## College Algebra

The load L a horizontal beam can safely support varies jointly as the width w and the square of the depth d and inversely as the length l. If a 12-foot beam with width 6 inches and depth 8 inches safely supports 600 pounds, how many pounds can a 14-foot

5. ## math

a dollar bill has an area of 15.86 square inches. If a dollar bill is 2.6 inches long, how wide is it? Please explain how you got please!!!

6. ## Math

Solve:(sec 35 degrees) (csc 55 degrees) - (tan 35 degrees) (cot 55 degrees)

7. ## Algebra

Find the solutions of the equation 3x^2 – x – 4 = 0.

8. ## Math

The function f is defined by f(x)=2x^2-6x+5 Find the set of values of p for which the equation f(x)=p has no real roots. Thanks in advance!

9. ## Math

1. What is a reasonable distance between two cities? • 200 km

10. ## Math

which property is shown by 0+9=9 A.) Distributive Property B.) Commutative Property of Addition C.) Identity Property of Addition D.) Associative Property of Addition I think its A but I'm not really sure

11. ## chemistry

In the following equation, which species is the oxidizing agent? KCLO3 --> KCL + KCLO4 In the same are, How do you know that Cu is the reducing agent in this equation: AgNO3 + Cu ---> Cu(NO3)2 + Ag

12. ## chemistry

Calculate the Gibbs free energy change for the reaction below when initial concentrations of CR3+ and Cu2+ are 1 M (F= 96500 J/V mole e-) 2Cr3+ (aq) + 3Cu (s) --> 2Cr (s) + 3Cu2+ (aq) I assume we use the deltaG= -nFE equation, but how do you know n when Cr

13. ## chemistry

What is the value of [OH-] in a 0.015 M CH3COOH solution? Ka = 1.8 x 10-5 I started by writing the equation: CH3COOH + H2O H3O+ + CH3COO- Ka= [H3O+][CH3COO-]/[CH3COOH]= 1.8 E-5 ... Now what? I don't understand where OH relates to this ...

14. ## Algebra

Convert 6^x = 1296 to a logarithmic equation

15. ## English- rhyme schemes

What is the rhyme scheme of William Shakespeare's "Full Fathom Five" and "Where the Bee Sucks There Suck I" ? Most of Shakespeare's poems are in iambic pentameter but these two aren't.

16. ## Chemistry

An analytical chemist weighs out 0.225g of an unknown diprotic acid into a 250mL volumetric flask and dilutes to the mark with distilled water. He then titrates this solution with 0.0700M NaOHsolution. When the titration reaches the equivalence point, the

17. ## Physics

Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction of the net electric force on the 1.65 μC charge. (Let A = 1.65 μC, B = 6.60 μC, and C = −4.20 μC.)

18. ## Spanish

¿Cómo son las monedas de pesos mexicanos?We had to do a reading and type the answers-not sure about this question Hay monedas de un peso, cinco pesos, diez pesos y de centavos. ¿En cuáles países se usa el dólar estadounidense? Panamá y Puerto Rico y

19. ## chemistry

Calculate the value of [H3O+] in a 0.01 M HOBr solution. Ka = 2.5E-9 I'm having a problem with just writing the equilibrium expression. do you add H2O to the HOBr? HOBr + H2O H3O+ + OBr- but then you could say that because HOBr = .01 M, then 0Br- = .01 M,

20. ## maths

The number of arrangements of five letters from the word 'magnetic' that contain the word net is: a)60 b)100 c)360 d)630 e)720 we're still doing this at school and I still don't get it; since I have to use three of the eight letters I only have five left

21. ## Language Arts

1. When you paraphrase a line of poetry, what do you do? A.You turn it into a question. B.You put it in your own words. C.You add humor to it. D.You copy it down exactly HELP!!

22. ## Optimization

A hunter is at a point on a river bank. he wants to get his cabin, located 19 miles north and 8 miles west. He can travel 5 mph on the river bank and 2 mph on the rough rocky ground.how far upriver should he go in order to reach the cabin in the minimum

23. ## MATH

There are 231 cubic inches in a gallon. A large juice can has a diameter of 6 inches and a height of 10 inches. How many gallons of juice does the can hold? Round your answer to the nearest tenth. I am clueless please please help me!!!!

24. ## chemistry

SF4 ---> SF2 + F2 rate constant (k) = .011 l/molxS [SF4]2 How many minutes will it take for the concentration of SF4 to be reduced from 2.5 M to .25 M? I said this was a 2nd order reaction and used : (1/final)= kt + (1/initial) and solved for t. the answer

25. ## chemistry

a cell is constructed by immersing a strip of silver in .10 M AgNO3 solution and a strip of lead in 1.0 M Pb(NO3)2 solution. A wire and salt bridge complete the cell. What is the potential of the silver electrode in the cell?

26. ## statistics

n=97,x=46;98% confidence

27. ## maths

Find the equation of each line a) with an x intercept the same as 2x-5y=10 and parallel to x=4 b) with an x-intercept of -4 and a y-intercept of 6 please help me, I have no idea how to do these

28. ## psychology

Is it possible that everything a person is or does is a function of the brain? Or are there other factors that influence who you are? I'm not sure that everything a person is is a function of the brain. I think factors like how and where you were raised

29. ## English-Beowulf

Who is Scyld? Where is he from? Where does he go? What does he do? Why does the poem begin here rather than with Hrothgar and Grendel? Scyld id Beowulf's father. Scyld was a Danidh king from the Scandion Lands. Scyld leaves to protect Lord Frea where he

30. ## Pre-Algebra

which symbol will make |-8| ? 8 true A.) > B.) < C.) = D.)its a equal (=) sign with a line (/) though it and I don't know whats its called..sorry but I think its C

31. ## Chem(redox rxn)

How do you know which element is being oxidized? Oxidation is lost, Reduction is gained. So in this equation: 2 MnO4^- + 5 C2O4^2- + 16H+ (right arrow) 2 Mn^2+ + 10 CO2 + 8 H2O what element is oxidized? a. no element is oxidized b. Mn c. C d. O my answer

32. ## sience

how are babies born

33. ## Statistics

The probability that a randomly selected two-year-old male stinkbug will live to be three years old is .59963 what is the probability that to randomly selected two-year-old male stinkbugs will live to be three years old? What is the probability that for

34. ## Calculus

A particle moves according to the equation of motion s(t)=t^2-2t+3 where s(t) is measured in feet and t is measured in seconds. Find the total distance traveled in the 3 seconds.

35. ## GC

A circular fountain has a diameter of 12 feet. A 2-foot wide path surrounds the fountain. What is the total area of the fountain and the path around it?

36. ## Math

How many perpendicular bisectors can be constructed for a line segment? A. 0 B. 1 C. 2 D. infinitely many I think D!

37. ## Statistics

Dr. Hernandez plans to measure FEV in a random sample of n young women from a certain popu- lation, and to use the sample mean y ̄ as an estimate of the population mean. Let A be the event that Hernandez’s sample mean will be within ±100 ml of the

38. ## Statistics

The distribution of cholesterol levels of the residents of a state closely follows the normal curve. Investigators want to test whether the mean cholesterol level of the residents is 200 mg/dL or lower. A simple random sample of 12 residents has a mean

39. ## Statistics

A statistical test is performed, and its P-value turns out to be about 3%. Which of the following must be true? Pick all that are correct. The null hypothesis is true. There is about a 3% chance that the null hypothesis is true. The alternative hypothesis

40. ## Solve the inequality

Solve the inequality. Write the solution in interval notation. (x+14)/(x-8)≥ 1

41. ## nursing

What would a women with type 1 diabetes test glucose score be is she did not fast 2 hours prior?

42. ## physics

If the force of friction acting on a sliding crate is 79 N, how much force must be applied to maintain a constant velocity? 79N so... What will be the net force acting on the crate? What will be the acceleration?

43. ## math

three boxes are in a room. You know that one contains apples, one centains oranges, and one contains a mixture of apples and oranges, but you don't know the contents of the specific boxes. The boxes are labeled "apples","oranges", and "apples and oranges",

44. ## math

a back yard is shaped like a parallelogram with a height of 32 feet and a base of 100 feet. One bag of grass seed covers 125 square feet. What is the least number of bags of seed needed to seed the lawn? Also, please explain how you got it.

45. ## Algebra

Perform the indicated operations of 5/8-(2-7)

46. ## Trig

A curve with polar equation r=(8)/7sinx + 36cosx represents a line. This line has a Cartesian equation of the form y=mx+b ,where m and b are constants. Give the formula for y in terms of x . For example, if the line had equation y=2x+3 then the answer

47. ## chemistry

what is the pH of a solution that is .15 M in HOCl and .25 M NaOCl after .05 mol HCl/L has been bubbled into the solution? this is what I did: HOCl + H2O ----> H3O+ + OCl- .15 .25 -.05 +.05 --------------------------- .1 .30 3.5E-8=[H3O][.3]/[.1] H3O=

48. ## chemistry

The following system is at equilibrium with [N2O4] = 0.55 M and [NO2] = 0.25 M. If an additional 0.10 M NO2 is added to the reaction mixture with no change in volume, what will be the new equilibrium concentration of N2O4? N2O4(g) 2 NO2(g)

49. ## statistics

The heights of a large population of students have a mean of 60" with a standard deviation of 3". What is the mean of the resulting distribution of sample means for n =16?

50. ## geometry

At rosemead high school, 94 students take biology, 86 take ethnic studies, and 95 take geometry. thirty-seven students take both biology and geometry, 43 take geometry and ethnic studies, and 42 take ethnic studies and biology. twenty eight students take

51. ## Communication and Gender Studies

List titles and artists of contemporary or older songs in relationship to gender and family. What message do the lyrics of the song convey considering the relationship to gender and family?

52. ## Communication and Gender Studies

List titles and artists of contemporary or older songs in relationship to gender and family. What message do the lyrics of the song convey considering the relationship to gender and family?

53. ## Communication and Gender Studies

How does the language we use, including the actual words that we have to name and describe things build our stereotypes?

54. ## Algebra

Find all of the zeros of the polynomial function and state the multiplicity of each. f (x) = (x^2 – 16)^2 A. – 4 with multiplicity 2 and 4 with multiplicity 2 B. – 4i with multiplicity 2 and 4i with multiplicity 2 C. 4 with multiplicity 2 D. 4 with

55. ## Algebra

The function w(x) = – 0.01x^2 + 0.27x + 8.60 can be used to estimate the number of selfemployed workers in the U.S., in millions, x years after 1980. How many self-employed workers were there in the year 1995? A. 9.8 million B. 10.4 million C. 11.15

56. ## History, Art

I need to find a picture of 2 paintings: Crimson Rambler by Philip Hale and Automat by Edward Hopper. I also need some assistance with this assignment involving these two paintings. I have to outline a story I would write about the woman in the

57. ## English- poetry

What is the definition of volta? How does the volta change the mood of a poem?

58. ## English-Canterbury Tales

I have to write a compare and contrast essay of 300 to 500 words on two characters. The characters have to be from the Wife of Bath, The Clerk's Tale, or The Merchant's tale. I am having trouble deciding which characters to write about. Which two

59. ## english beowulf

Who destroyed the Heorot and how? My answer: I think Grendel destroyed the Herot but I am not sure how. This story is hard to comprehend!

60. ## Math

Find the axis of symmetry. y = -x^2+8x+2 4

61. ## Math

The equation h=-16t^2+112t gives the height of an arrow, shot upward from the ground with an initial velocity of 112ft/s,where t is the time after the arrow leaves the ground. Find the time it takes for the arrow to reach a height of 120ft. Put in h for

62. ## Math - Ratios

Suppose that 48 out of every 120 students at Piedmont like to dance. And, of the people who like to dance, 3 out of 5 plan to enroll in the Dance Class for next Fall. Based on these ratios, if you survey 500 students at Piedmont, how many students would

63. ## algebra

2^(3z+9)=8^(2z+1)

64. ## History

i need help on this Utah history quiz.

65. ## Math

I need help to classify the solid figure. Lesson 9: Three-Dimensional Figures CE 2015 Math 7 B Unit 2: Measurement Assessment

66. ## Social Studies

The Continental Army gained a knowledge of professional tactics and drill from a Prussian military mercenary, ______________________ a Major General Charles Lee b General George Washington c Baron Friedrich Wilhelm von Steuben d Marquis de Lafayette

67. ## Spanish

URGENT!! why is gender important in spanish

68. ## Pre-Algebra

1)(6.0 × 10 to the 5th power) × (3.0 × 10 to the 4th power) A) 18 × 10 to the 20th power. B) 18 × 10 to the 9th power. C) 1.8 × 10 to the 20th power. D) 1.8 × 10 to the 9th power. 2)(5 × 10 to the -2 power) ÷ (2 × 10 to the 3rd power) A) 2.5 ×

69. ## Science

Which of the following is not a modal? A.) An ant farm B.) A bicycle C.) An atlas D.) A plastic human skeleton I'm not really sure what the answer is

70. ## Math

A recipe calls for 3 cups of milk for 4 pancakes. To use this recipe to make 16 pancakes, how many cups of milk are needed?

71. ## Math

Solve this pair of equations by the elimination method: 4x-3y=-4 3x=2y-4

72. ## math

If I work for 4/7 of a week, how many days off do I get in total over three weeks?

73. ## Chemistry

When a 6.50g sample of solid sodium hydroxide dissolves in 100.0g of water in a coffee cup calorimeter, the temperature rises from 21.6C to 37.8C. A.) Calculate the quantity of heat (in kJ) released in the reaction. (I know the answer, but can you show the

74. ## Chemistry

Calculate the molarity of the H2SO4 solution if 17.45 mL of NaOH was necessary to reach the endpoint of titration. The molarity of the NaOH solution was 0.425 M and 26.30 mL of H2SO4 was added to the Erlenmeyer flask. H2SO4(aq) + 2 NaOH (aq) -----> Na2SO4

75. ## civic

what are the limitatins to human rights

76. ## maths

cornel`s walking pace measures 60cm .How many metres has he walked after taking 50 paces?

77. ## math

Warner Cable Company needs to replace 5 vehicles. It considering 2 different types: Type HC with a higher cost and higher gas mileage and Type LC with a lower cost and lower gas mileage. Vehicle HC is \$35000 and Vehicle LC is \$28000. HC averages 43 miles

78. ## science

most of the life of a cell is spent in a period of growth and development called_____.

79. ## Calculus

Find the equation of the tangent line to the curve 2x^2y-3y^2=-11 at the point (2,-1).

80. ## Chemistry

Describe the procedure you would follow to determine the concentration of Vitamin C in a sample if the volume of DCPIP required to reach the endpoint was more than the 25-mL flask could hold. Note the titration must still be carried out in the flask. Be

81. ## Chemistry

Describe the procedure you would follow to determine the concentration of Vitamin C in a sample if the volume of DCPIP required to reach the endpoint was more than the 25-mL flask could hold. Note the titration must still be carried out in the flask. Be

82. ## math

Darleen gets \$10 a week allowance. She walks her neighbor's dog 6 days each week and earns \$3 each day. She earns \$7 an hour doing odd jobs. Darleen wants to save \$15 a week, give \$5 a week to charity, and have at least \$20 each week to spend. How many

83. ## Chemistry

When aluminum is reached in a closed container with 8.36 g of O2, how many grams of Aluminum oxide can form

84. ## Social Studies

1. Which BEST describes the differences that divide Maayan and Muhammad? A. age and interests B. physical barriers C. culture and politics** D. economic status 2. How does Maayan most directly experience the conflict in Israel? A. through treating victims

85. ## Social Studies, 6th Grade.

HELP!! I don't know this question: where would you most likely find south america's largest cities? Help! Someone tell me what the answer is!!! HELP!!!! Please help me. Someone answer my question.

86. ## Math

Help me! T~T How do you subtract with algebra?

87. ## math

What is the best order-of-magnitude estimate for 0.000002?

88. ## washington

Victoria buys two pairs of sunglasses for \$8 each.About how mucho did she pay for Both pairs of glasses?Foundation to the nearest ten.Solbes the problem using the gourmet Stephen plan

89. ## Math

Find x-value of all points where function has relative extrema and find the Values of these extrema. f(x)= (x^2)/(ln(x))

90. ## math

given that theta=tan^-1(4/3) find sin theta

91. ## American Government

Originalists often hold that it is incorrect to use the equal protection ckause of the foyrteen anendment to strike down laws that discriminate because

92. ## log[1/6](x^2+x)-log[1/6](x^2-x)=-2

Solve the equation log[1/6](x^2+x)-log[1/6](x^2-x)=-2

93. ## math

what is 8/16 of 16 counters

94. ## MATH.

7=2-5m; m= X+ 0.054= -1.802; x= If u can help me out or answer these for me u arr awesome and thank you.

95. ## math

what are two equivalent fractions for 10/13??

96. ## Science

Give the value of the 1st ionization energy of beryllium (Be). Express your answer in Joules (J/atom).

97. ## Physics

A rubber ball (mass 0.30 kg) is dropped from a height of 2.0 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.9 m/s. (a) What is the magnitude and direction of the impulse imparted by the floor to the ball? MAGNITUDE: 3.05 kg

98. ## Chemistry

A 15.0 mL sample of 0.250 M H2SO4 is neutralized by 20.5 mL of KOH solution. What is the molarity of the KOH solution?

Hi, please help me with this econs question! thanks! I'm asked to sketch the average and marginal cost curves of a software company, in which when it first starts up, the costs are extremely high. (High start up costs, millions of dollar spent to make the