# april

Popular questions and responses by april
1. ## Math

The ratio of red jelly beans to yellow jelly beans in a dish is 3:4. if greg eats 3 red jelly beans and 6 yellow ones, the ratio is 4;5. how many jelly beans were originally in the dish?

2. ## physics

A horizontal force of 200 N is applied to a 55 kg cart across a 10 m level surface. If the cart accelerates at 2 m/s^2 then what is the work done by the force of friction as it acts to retard the motion of the cart? Hint calculate the force of friction

3. ## history

Why, when, and where did Abraham Lincoln say "What kills a skunk is the publicity it gives itself." ? Thanks. Since this is not my area of expertise, I searched Google under the key words "Abraham Lincoln Skunk quote" to get possible sources. I got over 15

4. ## math

how many multiples of 7 are there between 100 and 1000?

5. ## chemistry

In one process of 5.75 kg of CaF2 are treated with an excess of H2SO4 and yield 2.85 kg of Hf calculate the percent yield of hf?

6. ## Social studies

What was the initial purpose of the constitutional convention?

7. ## math

A machine has four components, A, B, C, and D, set up in such a manner that all four parts must work for the machine to work properly. Assume the probability of one part working does not depend on the functionality of any of the other parts. Also assume

8. ## Physcis 1

A muscle builder holds the ends of a massless rope. At the center of the rope, a 7.9-kg ball is hung. Each end of the rope subsequently makes an angle of È with the horizontal. What is the tension in the rope if the angle È is 6.0°?

9. ## physics

suppose a .3 kg mass on a spring that has been compress .1 m has elastic potential energy of 1 j. how much further must the spring be compressed to triple the elastic potential energy? the answer is .07, but how do i get that?

10. ## English

For questions 7-10, identify the type of noun underlined in each sentence. 7. The AZTECS made sacrifices to their gods. (2 points) Select all that apply. Common. Proper. Compound. Collective. 8. A SWARM of insects surround the raft as we drifted down the

11. ## chemistry:)

The bond enthalpy of the Br–Cl bond is equal to DH° for the reaction BrCl(g)-> Br(g) + Cl(g). Use the following data to find the bond enthalpy of the Br–Cl bond. Br2(l)--->Br2(g) ÄH=30.91 KJ/mol Br2(g)--->2Br2(g) ÄH=192.9 KJ/mol Cl2(g)---->2Cl(g)

12. ## physics

A ball is thrown upward with an initial velocity of 13 m/s. At what time does the ball reach the high point in its flight? (Use the approximate value of g = 10 m/s2, and remember that the velocity is equal to zero at the high point.)

13. ## Math

Statistics show that the sales force of Golden Wholesalers successfully closed 1,711 sales out of 1,950 sales calls. What was their percent success rate?

14. ## Physics

Starting from rest, a 1.6x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.42 N on it. This force does 3.6x10-4 J of work on the flea. (a) What is the flea's speed when it

15. ## chemistry

Calculate the mL of 2.00 M H2SO4 required to neutralize 50.0 mL of 1.00 M KOH? consider that H2SO4 has two acidic hydoregens H2SO4(aq) +2KOH(aq)---->K2SO4(aq) + 2H2O(l)

16. ## Science

An electric light is plugged into a 120-V outlet. If the current in the bulb is 0.5 A, how much electrical energy is used by the bulb in 15 minutes?

17. ## statistics

A sign on the gas pumps of a chain of gasoline stations encourages customers to have their oil checked, claiming that one out of four cards need to have oil added. If this is true, what is the probability of the following events? a. One out of the next

18. ## Algebra

Suppose that the number of bacteria in a certain population increases according to a continuous exponential growth model. A sample of 1800 bacteria selected from this population reached the size of 2272 bacteria in five hours. Find the hourly growth

19. ## chemistry

Given the following equations: 2 H2O2 (aq) → 2 H2O (l) + O2 (g) and C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H2O (l) The first reaction is the decomposition of hydrogen peroxide into water and oxygen gas. The oxygen gas generated in the first reaction is

20. ## Geometry

Find the missing measure for a right circular cone given the following ... Find h if r = 5 and V = 100 pi.

21. ## Math

Jimmy has finished pouring 900 cubic feet out of a total of 4,400 cubic feet of concrete. What percent of the job has she completed?

22. ## Geometry

A cone with a radius of 3 inches has a total area of 24 pi sq in. Find the volume of the cone.

23. ## Math

Comparing Fractions Writing to explain James says that 5/5 is greater than 99/100. Is he correct? Explain.

24. ## Language Arts

Can you check my answer? Matt hiked the trail yesterday. It made him tired. Which sentence combines the two sentences using a gerund phrase? A- hiking the trail yesterday made Matt tired B- Matt hiked the trail and it made him tired. My answer C-It made

25. ## chemistry:)

The bond enthalpy of the Br–Cl bond is equal to DH° for the reaction BrCl(g)-> Br(g) + Cl(g). Use the following data to find the bond enthalpy of the Br–Cl bond. Br2(l)--->Br2(g) ÄH=30.91 KJ/mol Br2(g)--->2Br2(g) ÄH=192.9 KJ/mol Cl2(g)---->2Cl(g)

26. ## health part2

The sole activity of the respiratory system is breathing. True False The exchange of gases between the blood and tissue cells is external respiration. True False Air flows in the process of pulmonary ventilation because of pressure differences between the

27. ## math

The probability of getting a white marble from a bag is 1/5. If there are 37 white marbles in the bag, what is the total number of marbles in the bag

1. Americans are often accused of being ethnocentric. This means that A. Americans welcome diversity in their work force. B. Americans feel their culture is superior to other cultures. C. U.S. firms are actively seeking international markets. D. U.S.

29. ## physics

1. a 2 kg body is attatched to a spring of negligible mass and oscillates with a period of 1.00 s. The force constant of the spring is? 2. The force constant of a massless spring is 25 N/m. A mass of .45 kg is oscillating in simple harmonic motion at the

30. ## Math

Alice and Bill are planning to have three children. (Assume that it is equally likely for a boy or a girl to be born.) What is the probability that not all three will be of the same gender?

31. ## math

Jessie has a box of 1000 marbles . He has 75 yellow , 230 red, 331 blue and 364 green what fraction of his marbles are yellow? What fraction of his marbles are ref?

32. ## Math

Use properties of logarithms to rewrite the expression. Simplify the results if possible. Assume all variables present positive real numbers. Log6(7m+3q)

33. ## Math

What is the percent markup based on cost for the shirts in the previous question? (Round percent to the nearest tenth.) I got .72% What is the percent markup based on selling price for the Western Wear shirts? (Round percent to the nearest tenth.)

34. ## geometry

What two-dimensional cross sections could be created by slicing a triangular prism? Select all that apply. rectangle square hexagon ellipse triangle trapezoid

35. ## MATH

Please help check my answers to make sure they are correct. I used the "sinking fund payment and present value of an ordinary annuity" formulas to solve this story problem. Thanks! Story: Naomi Dexter is 20 years old. She decides to investigate several

36. ## Chemistry

1. As I understand it--As an acid is added to neutral water the (OH-) will...decrease?? Is this right? 2. If you made up a solution of NaOH by adding 0.010 mole of solid NaOH to 1.0 L of distilled water, what would be the concentration of the OH-?...I

37. ## Geometry

Find the missing measure for a right circular cone given...Find r if T.A.= 12 pi and L.A = 8 pi.

38. ## chemistry

what is the pH of coffee if the [H3O+] is 1*10^-5 M?

39. ## statistics

For which of the following would it be most appropriate to use an ANOVA to analyze the data? A. A researcher is interested in determining the most effective format for advertising. He randomly assigns 60 people to one of three groups: (1) television

40. ## Physics

A car slams on its brakes, coming to a complete stop in 4 sec. The car was traveling north at 60 mph. Calculate the acceleration

At lunch 3 1/4 small pizzas were equally devided into 4 people one person eats 1/4 of what he was given how much of a whole pizza did that person eat

42. ## Chemistry

At 20.0 degrees celcius, a student collects H2 gas in a gas collecting tube. The barometric pressure is 755.2mm Hg and the water levels inside and outside the tube are exactly equal. What is the total gas pressure in the gas collecting tube?

43. ## Math

luc has 1 h of homework to do. He has assignments to complete for social studies and math, and a science test. he sepends 2/5 of the time completing the social studies assignment, and 1/3 of the time on math. How much time does Luc have left to study for

44. ## Algebra and Trig

Aldo has feet of fencing. He will use it to form three sides of a rectangular garden. The fourth side will be along a house and will not need fencing. What is the maximum area that the garden can have?

45. ## Algebra

The perimeter of a rectangle is 100 feet and the length is 12 feet longer than the width. Find the length and width of the rectangle.

46. ## Math

A square with a side length of 2s has a smaller square inscribed. The vertices of the smaller square are at the midpoints of the sides of the larger square. What is the ratio of the larger square to the area of the smaller square? Express your answer in

47. ## Chemistry

A 11.0-mL sample of an unknown H3PO4 solution requires 116mL of 0.140 KOH to completely react with the H3PO4. What was the concentration of the unknown H3PO4 solution (answer in M). H3PO4(aq) + 3KOH(aq) --> 3H2O(l) + K3PO4(aq)

48. ## Science

A hollow iron cube has measures 5cm on each side and has a mass of 20g will the iron cube sink or float?

49. ## statistics

At the beginning of the semester, students who registered for a statistics course were randomly assigned to two sections, each taught by a different instructor. At the end of the semester, we would like to test whether there are differences in performance

50. ## Math

Amanda says her quilt has 9 equal parts. Jeremy says it has 3 equal parts. Can they both be correct? Explain.

51. ## English

The following items are run-on sentences. Revise each item either by making two complete sentences, or by adding a conjunctive adverb or semicolon. Change the punctuation and capitalization as necessary. Make all corrections on the sentences below. I was

52. ## Physics

A wire of thickness d = 5 mm is tightly wound 200 times around a cylindrical core to form a solenoid. A current I = 0.1 A is sent through the wire. What is the magnetic field on the axis of the solenoid?

53. ## statistics

Most Americans, 75% in fact, say frequent handwashing is the best way to fend off the flu. Despite that, when using public restrooms, women wash their hands only 67% of the time and men wash only 46% of the time. Of the adults using the public restroom at

54. ## Physics

A block of mass M1=2.9 kg rests on top of a second block of mass2=5.5 kg, and the second block sits on a surface that is so slippery that the friction can be assumed to be zero. Question: (a) if the coefficient of static friction between the blocks is

55. ## Math

Please help check my answers to make sure they are correct. I used the "sinking fund payment and present value of an ordinary annuity" formulas to solve this story problem. Thanks! Story: Naomi Dexter is 20 years old. She decides to investigate several

56. ## physics

An empty rubber balloon has a mass of 0.0100 kg. The balloon is filled with helium at a density of 0.181 kg/m3. At this density the balloon is spherical with a radius of 0.300 m. If the filled balloon is fastened to a vertical line, what is the tension in

57. ## Math

You play a gambling game with a friend in which you roll a die. If a 1 or 2 comes up, you win \$8. Otherwise you lose \$2. What is your expected value for this game?

58. ## Algebra 2

A box with no top is to be constructed from a piece of cardboard whose length measures 12 inches more than its width. the box is formed by cutting squares that measures 4 inches on each sides from 4 corners and then folding up the sides. If the volume of

a car with bad shock absorbers bounces up and down with a period of 0.731s after hitting a bump. The car has a mass of 1850kg and is supported by four springs of equal force constant k. Determine a value for k. Answer in units of N/m. if you can, could you

60. ## Integers

A decrease in 250 attendees

61. ## math

The unit rate of 7/12 liters in 3/10 kilometers

In general, a person who owns and operates his or her own business can be thought of as a/an A. entrepreneur. C. gambler. B. manager. D. pioneer. my answer is A Consider two used-car dealers: Bob’s Better Wheels and Dewey, Cheatum, and Howe Motors. Their

63. ## Civics

What is the main difference between an amendment to the Virginia and us constitution?

64. ## physics

A 7.4kg block starts 1.2m above the ground, at the top of a frictionless ramp. At the bottom of the ramp is a flat stretch of rough (μk = 0.15) ground 3.0m long. After sliding 3.0m, the ground becomes frictionless, and the block hits a spring (k =

65. ## Math

Laurie and Anna are running a 3 mile race. After 5 minutes, Laurie has run 3/5 miles and Anna has run 7/10 mile. If both ladies can keep their same pace for the remainder of the race, how many minutes ahead of Laurie will Anna cross the finish line?

66. ## physics

What speed would a fly with a mass of 0.71 g need in order to have the same kinetic energy as a 1250 kg automobile traveling at a speed of 11 m/s?

67. ## physics

A ball of mass 0.075 kg is fired horizontally into a ballistic pendulum. The pendulum mass is 0.350 kg. The ball is caught in the pendulum, and the centerof mass of the system rises a vertical distance of 0.145 m in the earth's gravitational field. What

68. ## math

On a map, 1 inch equals 20 miles. Two cities are 135 miles apart. What is the distance between the two cities on the map?

69. ## CHEM:

The bond enthalpy of the Br−Cl bond is equal to ƒ¢H‹ for the reaction BrCl(g) ¨ Br(g) + Cl(g). Use the following data to find the bond enthalpy of the Br−Cl bond. Br2(l)--->Br2(g) ƒ¢H=30.91 KJ/mol Br2(g)--->2Br2(g) ƒ¢H=192.9 KJ/mol

70. ## chemistry

In my experiment I placed NaCl in glycerin for 10 minutes or more and it did not dissolve. I have looked to see if glycerin is polar or nonpolar and the information uses glycerol and glycerin interchangeably, yet they are not the same. Some information

71. ## algebra

A cubic polynomial function f(x) has leading coefficient -2 and intercepts the y-axis at 2. If f(1)=1, and f(-2)=-2, find f(-1) and write the complete function.

An invoice is dated August 29 with terms of 4/15 EOM. What is the discount date? (Points What is the net date for the scenario in the previous question? (Points : 2.5)

73. ## Multiplicative inverse

Angelo says that if you know one unit rate in a proportional relationship, the other unit rate is always the multiplicative inverse of the unit rate you know. Is Angelo correct? Explain

74. ## Civics

what preamble goal is fulfilled when amendments are added to the constitution?

75. ## Math

If ⅜ of a 60-pound bag of ready-mix concrete is Portland cement, how many pounds of other materials are in the bag?

76. ## CHEMISTRY

Predict the products of the following reactions. a)CH3-CH2-CH2-CH3+O2----> B)CH3-CH2-CH2-CH2-CH3+Br2----> c)CH3-CH=CH-CH3+Br3----> D) HEXENE+KMnO4--> E) HEXENE+Br2---->

77. ## physics

a 200 kg block was moved along an inclined plane to a height of 10m. during this process 3000J of energy was lost due to friction. a. calculate the efficiency of the inclined plane. b. what would the efficiency of the simple machine be if the incline were

78. ## math

Shelby walks at a constant rate. the equation that represents this relationship is d=4t, where d is the distance in miles and t is the time in hours. What does the constant 4 tell you about shelby? Make use of structure. What question is answered by the

79. ## Physics

A 8.22 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 16.8 N. Find the speed of the block after it has moved 2.3 m. Answer in units of m/s

80. ## Chemistry

What is the concentration of a solution prepared by diluting 25.0 mL of HCL 0.750 mol/L to a final volume of 500.mL?

81. ## History

The last part of the Declaration of Independence contains a list of complaints the colonists had against King George. Which of the following best describes an economic complaint the colonists had toward the king? Cutting off trade*** Taking away colonial

82. ## math

You have 11 coins that total 43 cents. What combination of coins can you have

83. ## Maths

Prove (cosecθ-cotθ)^2=1-cosθ÷1+cosθ

84. ## Math

Drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. How many fluid ounces of milk provide 72.5 milligrams of calcium? Round to the nearest tenth.

85. ## Concepts in number sense

An odd number whose thousands digit is twice its hundreds digit

86. ## statistics

A professor is interested in the relationship between the number of hours students study for a quiz and their quiz grades. She asked each student to record the number of hours that he/she studied for the final exam. She also recorded the students’ grades

87. ## math

A police department reports that the probabilities that 0,1,2, and 3 burglaries will be reported in a given day are .51, .44, .04, and .01, respectively. Find the expected number of burglaries reported in a given day. How do I figure this out? I simply do

88. ## Accounting

The primary objective in job order costing is to determine the cost of materials, labor, and factory overhead used to produce a specific order or contract. Cost estimates are made when the order is taken, and the job order procedures are designed to reveal

89. ## physics

On his way off to college, Russell drags his bag 15.0 m from the door of his house to the car at a constant speed with a horizontal force of 95.0 N. How much work does Russell do to overcome the force of friction?

90. ## chem 101

How many milliliters of 0.205 M NaOH solution are needed to completely neutralize 5.50 mL of 0.865 M H2SO4 solution?

91. ## Physics

Which of the following is correct for a step-down transformer?

92. ## science

define the following 1.science 2.technology 3.innovations 4.measurement 5.international system or S.I

93. ## biology

Why must plants have both mitochondrion and chloroplasts? Thanks in advance. I think it has something to do with the fact that chloroplasts convert sunlight into chemical energy. Does that sound right? One of the most widely recognized and important

94. ## math/algebra

Find the hang time for a golf ball hit 150 feet into the air. The time T in seconds is given by the function T(x)= square root of x over 2

95. ## Math

Solve the following problem and convert to lowest terms (mixed number). 6 ⅚ – 17/18 (six and five sixths minus seventeen eighteenths)

96. ## Math

The school auditorium has 8 rows of seats, divided into 3 sections. Each section has 15 seats. Which one the following would be the correct way to figure out the total number of seats? a. 8x15 b. 8x3x15 c. 3x3x8 d. 8x3 Isn’t this an error? I think the

97. ## Statisix

The mean price of photo printers on a website is ​\$241 with a standard deviation of ​\$60. Random samples of size 30 are drawn from this population and the mean of each sample is determined.

98. ## Chemistry

Can someone please help me with the following? How do I find the specific heat of a metal when the only information I have is a temperature change ( of -73 degrees C) and a mass (of 22.53 grams)? And what is the forumla for specific heat? Thanks in