# Kendra

Popular questions and responses by Kendra
1. ## Math

The price of a stock, A(x), over a 12-month period decreased and then increased according to the question A(x)= 0.75x2-6x+20, where x equals the number of months. The price of another stock, B(x), increased according to the equation B(x)=2.75x+1.50 over

1. Solve the system of equations y=2x^2-3 y=3x-1 a)no solution b)(-1/2,5),(2,-5/2) c)(-1/2,-5/2),(2,5)**** d)(1/2,5/2),(2,5) 2. How many real number solutions are there to the equation 0=-3x^2+x-4? a)0 ***** b)1 c)2 d)3 3.solve the equation by completing

3. ## Math help and check

Which kind of function best models the set of data points (–1, 22), (0, 6), (1, –10), (2, –26), and (3, –42)? linear **** quadratic exponential none of the above 2. Which kind of function best models the set of data points (–3, 18), (–2, 6),

4. ## English

8. What can readers infer from the following quote from Act V, Scene 3 of Romeo and Juliet? Romeo: O, be gone! By heaven, I love thee better than myself; For I come hither arm’d against myself: Stay not, be gone;--live, and hereafter say, A madman’s

5. ## General Chemistry

Cinnamic alcohol is used mainly in perfurmery, particularly in soaps and cosmetics. Its molecular formula is C9H10O. a. Calculate the percent composition by masss of C, H, and O in cinnamic alcohol. b. How many molecules of cinnamic alchol, not acid ,are

6. ## math-algebra 2

What are the solutions of the quadratic equation? 2x2 – 16x + 32 = 0

7. ## Math

Kendra has 5.5 pounds of popcorn and wants to package it equally in 50 bags. How can she use place-value reasoning to find the amount of popcorn to put in each bag?

8. ## chemistry

Explain how the addition of a solute affects the vapor pressure of the solvent.

9. ## Physics

What hanging mass will stretch a 1.9-m-long, 0.54 - diameter steel wire by 1.2 ?

10. ## word problem Math

A pollster interviewed 500 university seniors who owned credit cards. She reported that 240 had Goldcard, 290 had Supercard, and 270 had Thriftcard. Of those seniors, the report said that: 80 owned only a Goldcard and a Supercard, 70 owned only a Goldcard

11. ## Statistics

4. The Graduate Record Exam (GRE) has a combined verbal and quantitative mean of 1000 and a standard deviation of 200. Scores range from 200 to 1600 and are approximately normally distributed. For each of the following problems: (a) draw a rough sketch,

12. ## algebra

Perform the indicated operation. x/2+y/3-z/4

13. ## Chemistry

what is the magnitude and sign of the molar heat of vaporization of butane

14. ## chemistry

Assuming all volume measurements are made at the same temperature and pressure, how many liters of oxygen gas would it take to react completely with 7.25 liters of hydrogen gas? Show all of the steps taken to solve this problem. Unbalanced equation: H2 (g)

15. ## Algebra

The sum of two numbers is 68 and the difference is 10. What are the numbers?

16. ## General Chemistry

PLEASE ANSWER VERY SOON I AM STUCK! Crystalline silicon has a cubic structure. The unit cell edge length is 543 pm. The density of the solid is 2.33 g/cm3. Calculate the number of Si atoms in one unit cell.

17. ## UncG

A 1300 kg sports car accelerates from rest to 90 km/h in 7.4 s. What is the average power delivered by the engine?

18. ## Chemistry

In the experiment Nitration of Methyl Benzoate why is it important to add the nitric acid-sulfuric acid mixture slowly over a 15 minute period?

19. ## Physics

On a distant planet, golf is just as popular as it is on earth. A golfer tees off and drives the ball 4.3 times as far as he would have on earth, given the same initial velocities on both planets. The ball is launched at a speed of 40 m/s at an angle of

20. ## chemistry

The boiling point of a solution will ______ and the vapor pressure will _______ with a(n)_____ in the amount of dissolved solute.

21. ## Chemistry

Which of the following statements is (are) true? A. The vapor pressure of CO2 is lower than the vapor pressure of water. B. Sea water has a lower vapor pressure than distilled water. C. The vapor pressure of 1 m NaCl is higher than the vapor pressure of

22. ## Genera Chemistry

Nitric oxide (NO) reacts with oxygen gas to form nitrogen dioxide (NO2), a dark-brown gas: 2NO(g) + O2(g) -> 2NO2(g) In one experiment 0.886 moles of NO is mixed with 0.503 moles of O2. Calculate which of the two reactants is the limiting reagent. Please

23. ## physics

during space flight, astronauts often refer to forces as multiples of the force of gravity on earth's surface. what does a force of 5g mean to an astronaut?

24. ## bio

What causes a monosomy of chromosome 20?

25. ## science

describe how carbon dioxide is managed by the rbc from the tissue

26. ## math

Travis is 2121 years older than his sister Michelle. In 99 years, he will be twice as old as Michelle. How old is each of them now?

27. ## Algebra 1

Find the numbers whose sum is 15, if twice the first number minus the second number equals 6.

28. ## Math

Round to the nearest hundredths 23.456

29. ## chemistry

How many grams of calcium carbonate are required to prepare 50.0 grams of calcium oxide? CaCO3-> CaO + CO2

30. ## Art Appreciation

Compare Raphael's School of Athens with Veronese's Christ in the House of Levi. How did each work reflect the environments of Rome or Venice?

31. ## Chemistry

it takes 37.50 mL of 0.152 M sodium chromate to titrate 25.00 mL of silver nitrate. what is the molarity of the silver nitrate solution

32. ## chemistry

31.0mL sample of LiOH, concentration unknown, is titrated with .52 M HCl. It takes 42.9 ml of HCl to reach the endpoint. What is the concentration of the base?

33. ## Physics

On a spacecraft two engines fire for a time of 560 s. One gives the craft an acceleration in the x direction of ax = 5.10 m/s2, while the other produces an acceleration in the y direction of ay = 7.30 m/s2. At the end of the firing period, the craft has

34. ## Algebra

If 10,000 is invested at 4.8% simple interest, how long will it take for the account balance to grow to 11,200.

35. ## Psychics

A freight car is moving freely along a railroad track at 7.0 m/s and collides with a tanker car that is at rest. After the collision, the two cars stick together and continue to move down the track. What is the magnitude of the final velocity of the cars

36. ## Math

What is the name for a three demensional figure that has only one circular face

37. ## Algebra Help

Write the equation of a perpendicular bisector of the segment joining the points: (7,2) and (3,0). Okay, so I don't even know what a bisector is. Is there a formula for this or something? If some could someone tell me it. Or tell me the process.

38. ## General Chemistry

When potassium cyanide (KCN) reacts with acids, a deadly poisonous gas, hydrogen cyanide (HCN), is given off. Here is the equation: KCN(aq) + HCI(aq) -> KCI(aq) + HCN (g) In a sample of 0.140 grams of KCN is treated with an excess of HCI calculate the

39. ## Genera Chemistry

Balance the following equations: a. C + O2 CO b. CO + O2 CO2 c. H2 + Br2 HBr d. K + H2O KOH + H2 e. Mg + O2 MgO please explain and show work.

40. ## General Chemistry

Nitric oxide (NO) reacts with oxygen gas to form nitrogen dioxide (NO2), a dark-brown gas: 2NO(g) + O2(g) -> 2NO2(g) In one experiment 0.886 moles of NO is mixed with 0.503 moles of O2. Calculate which of the two reactants is the limiting reagent. Please

41. ## General Chemistry

3.71 When potassium cyanide (KCN) reacts with acids, a deadly poisonous gas, hydrogen cyanide (HCN), is given off. Here is the equation: KCN(aq) + HCl(aq) -> KCl(aq) + HCN(g) If a sample of 0.140 grams of KCN is treated with an excess of HCl, calculate the

42. ## General Chemistry

Balance the following equations: a. C + O2 CO b. CO + O2 CO2 c. H2 + Br2 HBr d. K + H2O KOH + H2 e. Mg + O2 MgO please explain and show work.

43. ## math

Sam received a \$290 discount loan to purchase a stereo. The loan was offered at 16% for 90 days. Find the interest in dollars and the proceeds for the following problem. The interest is \$12.60, \$11.60, or \$10.60 ? The proceeds are \$279.40, \$278.40, or

44. ## physics

According to Newton's version of Kepler's third law, how would the ratio T^2/r^3 change if the mass of the Sun were doubled?

45. ## Elementary Math for Educators

give three ways a student could find the product of 9x7 if she had not memorized this fact.

46. ## Cell division

If white blood cells divide rapidly, is there a high chance of monosomy?

47. ## Biology

What are the symptoms of a monosomy of chromosome 20? and is their a name for the disorder/syndrome?

48. ## Biology

What are the symptoms of a monosomy of chromosome 20? and is their a name for the disorder/syndrome?

49. ## ENGLISH

The phrase "She called it a day" is __________.Select one of the options below as your answer:A. a metaphorB. hyperboleC. an idiomD. personification

50. ## social studies

Where can I find information on: "What products might we get from the seven major regions of the United States?" (Great Lakes, Mountain, Southwest, Northeast, Plains, Pacific, Southeast) This encyclopedia article discusses the regions of the U.S. The

51. ## Math algebra

an electrician cuts a 17 ft piece of wire into two pieces one piece is 11 ft longer than the other how long are the pieces

52. ## math

HOW can you solve this draw a number line to show that 2/3 and 4/6 are equivalent

53. ## digital arts

sculpture is an example of preforming art true false**

54. ## English

I need a theme statement about discrimination

55. ## algebra 2

the sum of 3 consecutive intergers is 90. find the largest interger if x is the smallest interger

56. ## Chemistry

When mixing 10m/L of 6 M HCl (diluted with 10 mL of water) with 0.1 g of Mg, how many moles of H2 are created and how many moles of Mg are reactant? I understand I must use n=(PV)/(RT) to find H2, since it is a gas, but the constant R is still confusing to

57. ## math

One day during flu season, 1/3 of the students in a class were out sick, and only 24 students were left. How many students are in the class?

58. ## Literature

PART A: What is Asimov's main idea in this essay? (Science an the sense of wonder) A- space is best appreciated through poetry B- poetry and science can work together****** C- the universe is more than beauty D- scientific knowledge is always advancing

59. ## Us history

the sugar act was a new tax on molasses but actually lowered an earlier text what were the colonists doing in response to the earlier text that the sugar act try to stop? A.) Declaring independence from Britain B.) Paying only a portion of it C.) Holding

60. ## Science

I need help finding two examples of natural social systems

61. ## Math

In high school, I played soft ball. I hit the ball into the air with an upward velocity of 35 ft. The equation that gives the height (h) of the ball at any time (t) is: h(t)= -15t2 + 35ft + 1.0. What is the y-coordinate of the vertex? Use: x=-b/2a

62. ## Calculus

Let f(t)=(1)/(t) Find a value of t such that the average rate of change of f(t) from 1 to t equals 14. t= ____

63. ## Math

There are 40 yellow and blue marbles in a bag. There are 4 times as many blue marbles as yellow marbles. How many yellow marbles are there? 5 How many blue marbles are there? 35

64. ## College Algebra

An executive invests \$26,000, some at 8% and some at 6% annual interest. If he receives an annual return of \$1,800, how much is invested at each rate?

65. ## Physics

Ball A is thrown upward from the top of a building and takes 12 s to hit the ground. Ball B is thrown downward with the same speed as Ball A and takes 7 s to hit the ground. How long does it take for ball A to reach it peak?

66. ## Statistics

The grades in the final exam of a random sample of 25 students produce a standard deviation, s = 9.5. a) Construct a 90% confidence interval estimate for the population variance, . b) Can we infer at 10% level of significance that the population variance

67. ## physics

Calculate the potential energy of a 9.00 g bullet traveling 4.00 m above the ground at 50.0 m/s with respect to the ground

68. ## Math

A box manufacturer wants to produce an open box for which the volume is 2 cubic meters and the length is twice the width. What actual dimensions of he box will require the least amount of material? Work: V = 2m^3 2m^3 = (w)*(2w)*(h) Possible dimensions:

69. ## Math

What is the amount of interest on the loan? \$ b. What is the maturity value of the loan? \$ c. What is the maturity date of the loan? Enter the full name of the month.

70. ## government

According to John Locke, citizens give up some personal liberty as part of their _________________________ with government

71. ## government

The _________________________ created new religious systems that were not bound to the government.

72. ## government

A(n) _________________________ differs from a direct democracy in that only a small number of elected representatives actually vote on a specific issue.

73. ## goverment

America’s founders envisioned a _________________________ that was closer to the government of ancient Athens than to the political system found in America today

74. ## goverment

Forming a strong political _________________________ without forming an equally sound understanding of politics could lead to making unwise choices in the voting booth.

75. ## CHEMISTRY Homework Assignment

Hi I noticed someone else put this question up, but I am having a hard time with this one. I HAVE NO IDEA WHAT TO DO. What will be the products of the electrolysis of an aqueous solution of zirconium iodide (ZrI4)? (The electrodes themselves are platinum.)

76. ## trig

A slide is attached to the side of a tree house. The height of the tree house is 6 less than double the distance from the baswe of the tree to the base of the slide. The length of the slide is 3 more than the height of the tree house. Find the length of

77. ## Englishh

if my quote is exactly 4 lines do i have to indent it using MLA formatting an citations

78. ## Calculus

What is the connection between improper integrals, Riemann sums, and the integral test?

79. ## math/calculus

when approximating the value of transcendental functions, why are some centers more useful than others?

80. ## Chemistry

are molar heat of vaporization and heat of vaporization the same thing?

81. ## Chemistry

are molar heat of vaporization and heat of vaporization the same thing?

82. ## Writing

What is another way I could say "home"? I am trying to use the word to describe a place where someone feels comfortable and at ease and in place but the word home sounds awkward.

83. ## Calculus

solve for x e^(2x+3) -7=0 ln(5-2x)=-3

84. ## history

during the colonial 1580-1776 which physical feature presented the greatest obstacle to colo nists who wanted to move westward

85. ## math

8 divided by 4 over 9

86. ## Spanish

True or False? Hospitals only perform surgeries.

87. ## Growth and phsical development

can anyone help me out i have an assingment and need to identify growth and physical charateristics identifed and them also in action

88. ## Computers

For each order, display the Company Name, City, and the Country for the customer who placed the order.

89. ## Polynomials and quadratic application

Suppose I want a garden with 400 square feet. Write an equation that can be used to find the values for x that will result in that area.

90. ## Polynomials and quadratic application

I want to make a rectangular garden by fencing in a area on the back of my house. Three sides of the rectangle will be fencing; the fourth side will be the side of the house. I have 60 feet of fence. What dimensions should I make the rectangle so that I

91. ## chemistry

0.82g of an unknown gass is at 30 degrees C in 3L container at a pressure of 15.9psi. What is the molecular weight of the unknown gas?

92. ## chemistry

N2+2H2=N2H4 What is the concentration of H2 at equalibrium when (N2)=.033 and (N2H2)= .042 M? Keq=5.29

93. ## math

Mia gave 1/3 of her 24 marbles to david. How many did david get?

94. ## math

mia gave 1/3 of her 24 marbles to david how many did david get?

95. ## calculus

use differentials to approximate the value of the squareroot of 4.3

96. ## Algebra 2

Okay so I need help with basically how to find the domain, range, and how to solve if it says Find the value of f(3). Let the f function be defined by f(x) = the square root of x + 1 for -1 is less than or equal to x less than or equal to 3. And 4 - x for

97. ## Science

What are deep currents and how do they form?

A wooden raft 3 m long x 2 m wide x 20 cm thick floats on a freshwater lake. A) Determine the buoyant force? B) If the raft itself has a mass of 600 kg, how many 65-kg people could it support?

99. ## College Personal Finance

Annual interest of 6.0% paid if balance exceeds \$900, \$12 monthly fee if account falls below minimum balance, average monthly balance \$1,135, account falls below \$900 during 2 months. Round the answer to the nearest cent.