# Matt

Popular questions and responses by Matt
1. ## chemistry

The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal contact and the combination is isolated. The final temperature of both objects is:

2. ## Chem

Order the elements S, Cl, and F in terms of increasing atomic radii. I thought the answer was F, S, Cl, but the answer key said it was S, F, CL Why? AR decreases from left to right. Sulfur has one more energy level, so shouldn't its atomic radii be greater

3. ## Math (Probability)

Suppose that 4 cards are drawn from a well-shuffled deck of 52 cards. What is the probability that all 4 are hearts? There are 13 hearts of 52 cards. So, where do I go from here to solve the equation?

4. ## math

The windows of a downtown office building are arranged so that each floor has six fewer windows than the floor below it. If the ground floor has 52 windows, how many total windows are on the first eight floors?

5. ## Finance

Nico Trading corporation is considering issuing long-term debt. The debt would have a 30 year maturity an a 10 percent coupon rate. In order to sell the issue, the bonds must be underpriced at a discount of 5 percent of face value. In addition, the firm

6. ## history

How did the humanism of the Renaissance compare with traditional Church teachings? A Both humanism and the Catholic Church taught that people are born sinful and in need of salvation. B Humanism’s focus on individual free thinking clashed with the

Jungle, Inc., has a target debt−equity ratio of 0.72. Its WACC is 11 percent, and the tax rate is 31 percent. (Do not include the percent signs (%). Round your answers to 2 decimal places. (e.g., 32.16)) Required: (a) If Jungle's cost of equity is 14

8. ## Chemistry

A sample of sodium-24 with an activity of 12 mCi is used to study the rate of blow flow in the circulatory system. If sodium -24 has a half-life of 15 hours, what is the activity of the sodium after 2.5 d ?

9. ## Chemistry

A sample of C3H8O that contains 200. molecules contains ________ carbon atoms.

10. ## calculus

Let f be a differentiable function such that f(3) = 2 and f'(3) = 5. If the tangent line to the graph of f at x = 3 is used to find an approximation to a zero of f, that approximation is? So confused

11. ## Statistics

A sign on the gas pump of a certain chain of gasoline stations encourages customers to have their oil checked, claiming that one out of every four cars should have its oil topped up. What is the probability that exactly 3 of the next 10 cars entering a

12. ## Math

There are 72 boys and 90 girls on a math team. For the next competition, Mr Johnson would like to arrange all the students in equal rows with only girls and only boys in each row. What is the greatest number of students that can be in each row? Answer: 72

13. ## College alerbra

Scott invested a total of \$9500 at two separate banks. One bank pays simple interest of 11% per year while the other pays simple interest at a rate of 9% per year. If Scott earned \$973.00 in interest during a single year, how much did he deposit in each

14. ## physics

Vector V1 is 6.4 units long and points along the negative x axis. Vector V2 is 8.9 units long and points at 60 degrees to the positive x axis 1) find x and y components of v1 and v2? 2) find magnitude of the sum v1+v2? 3) find the angle of the sum v1+v2? I

15. ## Algebra

which equation represents the relationship shown in the table below? x | 0 | 1 | 2 | 3 | __________________ y | -3 | -1 | 1 | 3 | a.) y = -x - 3 b.) y = x - 3 c.) y = 2x - 3 d.) y = -2x + 3

16. ## Physics

A 4 kg mass and a 9 kg mass are being held at rest against a compressed spring on a frictionless surface. When the masses are released, the 4 kg mass moves to the east with a speed of 2m/s. What is the velocity of the 9 kg after the are released?

17. ## Math

The measurement of the radius of a circle is 16 inches, with a possible error of .25 inches. Use differentials to approximate the possible propagate error in computing the area of the circle.

which three-dimensional figure has all triangular faces? A. triangular prism B. triangular pyramid***i pick B.*** C. rectangular pyramid D. cone

19. ## math

find the area of the shaded region in the figure assuming the quadrilateral inside the circle is a square. x^2+y^2=36 (the picture is of a square inside a circle on a coordinate plane)

20. ## Chemistry

A mixture of C3H8 and C2H2 has a mass of 2.3g . It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.6 times as many moles of CO2 as of water. What is the mass of C2H2 in the original mixture?

21. ## Chemistry

The Henry's law constant for CO2(g) in water at 25 °C is 29.4 bar·M–1. Estimate the concentration of dissolved CO2(g) in a carbonated soft drink pressurized with 1.95 bar of CO2(g).

22. ## math?

how do i figuire this problem out? .. A deep-sea diver must descend and ascend in short steps to equalize pressure on his body. If the diver rises toward the surface too fast, he may suffer from a physical condition called “the bends.” Suppose the

23. ## Math

Penn writes a 2013-term arithmetic sequence of positive integers, and Teller writes a different 2013-term arithmetic sequence of integers. Teller's first term is the negative of Penn's first term. Each then finds the sum of terms in his sequence. If their

please check my answers 1. B 2. A 3. D 4. A 1.B 2.A 3.D 4.A 1.All renewable resources are inexhaustible A.true B.false 2.Some fuels,called biofuels,are made from plants.They are used in cars and other machines biofuels would fit best in which of the

1. A 2. C 3. A 4. D 1. Coal, oil, and natural gas are inexpensive sources of fuel which do not cause pollution when used. A. true B. false 2. One reason people around the world use coal as an energy source is: A. It is nonrenewable. B. it can be found many

26. ## history

What are scientific innovations of the Renaissance? Select all that apply. A sun dial B mechanical clock C spinning jenny D microscope i think it is A and D

27. ## math

Assume an 18 month CD purchased for \$7000 pays an APR of 7% compounded monthly. What is the APY? APY = ___% Round the answer to two decimal places

28. ## math

The length of a rectangular landing strip exceeds its width by 3,700 feet. If its perimeter is 17,400 feet, what is the length, in feet, of the airfield? A. 2500 B. 5000 C. 6200 D. 10000 E. 13700

29. ## geometry

what would be the next sequence in george, thomas, abe, alexander,...and why

30. ## english

please help me!!!! Put the sizes on the uniforms while sorting them out. and the italicized is sorting them out,can only be: adverb clause infinitive phrase past participial phrase elliptical clause adjective clause

31. ## computer science

I need help with my Java homework! Write a program that calculates a customer's monthly bill. It should ask the user to enter the letter of the package the customer has purchased (A, B, or C) and the number of hours that were used. It should then display

32. ## Sociology Multiple choice

Which of the following is(are) true of culture? a. culture would be significant whether people held it in common or not b. despite the cultural diversity that exists in American society, there are symbols, language patterns, belief systems, and ways of

33. ## Math

Mary can clean a house in two hours, Gina can clean a house in three hours. How long would it take for Mary and Gina to clean the house together.

34. ## Math

Penn writes a 2013-term arithmetic sequence of positive integers, and Teller writes a different 2013-term arithmetic sequence of integers. Teller's first term is the negative of Penn's first term. Each then finds the sum of terms in his sequence. If their

A charge of +Q and a charge of +2Q are separated by a distance r. The electric force of +2Q on +Q has a magnitude of F and is directed to the right. Which one of the following statements is correct regarding the electric force of +Q on +2Q? (A)The electric

36. ## eco

Suppose a person pays \$80 of annual interest on a loan that has a 5 percent annual interest rate. The loan amount is: A. \$400. B. \$1,600. C. \$160. D. \$85. 10. Suppose a loan customer is considering two alternative \$22,000 loans. Loan 1 requires payment of

37. ## chemistry

A 0.1943g iron ore sample was dissolved in hydrochloric acid and the iron was obtained as Fe 2+ (aq). The iron solution was titrated with Ce 4+ solution according to the balanced chemical reaction shown below.After calculation, it was found that 0.0237 g

38. ## college physics

Three identical balls are thrown from the top of a building, all with the same initial speed. The first is thrown horizontally, the second at some angle above the horizontal, and the third at some angle below the horizontal. Neglecting air resistance, rank

39. ## Chemistry

Pure acetic acid, known as glacial acetic acid, is a liquid with a density of 1.049 g/mL at 25°C. Calculate the molarity of a solution of acetic acid made by dissolving 35.00 mL of glacial acetic acid at 25°C in enough water to make 400.0 mL of solution.

1.never the difference of two positive integers is _____ negative. A.always B.sometimes C.never

41. ## Physics

An automobile tire has a volume of 0.0185 m3. If the pressure in the tire is 500 kPa and the temperature is 298 K, how many molecules are there inside the tire?

42. ## calculus

Suppose the following about a certain object: I. The object's altitude is a function of time, represented by the function A(x) where here x is time. II. The temperature of the object is a function of its velocity, represented by the function T(x), where

43. ## Physics

A hollow metal sphere has inner and outer radii of 20.0 cm and 30.0 cm, respectively. As shown in the figure, a solid metal sphere of radius 10.0 cm is located at the center of the hollow sphere. The electric field at a point P, a distance of 15.0 cm from

44. ## Algebra

Suppose that |a-b|+|b-c|+|c-a|=20. What is the maximum possible value of |a-b|?

45. ## Math

Nathan is designing a box to keep his pet newt in. To make the box, he’s going to start with a solid rectangle and cut squares with sides x cm in length from each corner, as shown in the picture below. The dimensions of the of the solid rectangle are 51

can someone check my answer thanks ! 2.The ability to do work or cause change is called A.velocity. B.energy.(I PICK B.) C.transfer. D.friction. 3.Which type of energy is demonstrated by a person jogging? A.electrical energy B.nuclear energy

47. ## Math

In a certain lottery, five different numbers between 1 and 30 inclusive are drawn. These are the winning numbers. To win the lottery, a person must select the correct 5 numbers in the same order in which they were drawn. What is the probability of winning?

48. ## Math

Find the exact value of cos(u + v) ) given that sin u= 9/41 cos nu=- 15/17 . (Both u and v are in Quadrant II.)

49. ## calculus

Find the general solution of this de (1+cosx)y'=sinx(sinx+sinxcosx-y) I need full step have tried but nothing good is coming out

50. ## Algebra

A number n is less than 6 units from 0. write inequality and solve it.

51. ## Science

The Strange Case of Beriberi In 1887 a strange nerve disease attacked the people in the Dutch East Indies. The disease was beriberi. Symptoms of the disease included weakness and loss of appetite, victims often died of heart failure. Scientists thought the

52. ## math

Assume an 18-month CD purchased for \$7000 pays an APR of 3% compounded monthly. What is the APY?

53. ## Spanish

1 of 15 I tried to get there on time, but there was an accident on the freeway: Yo ____(1)____ llegar a tiempo, pero ____(2)____ un accidente en la autopista. Options 1-quise or queria 2-hubo or habia Answers 1- quise 2 -habia 2 of 15 They refused to admit

54. ## Math

Let a1,a2,......a10 be an arithmetic sequence. If a1+a3+a5+a7+a9=17 and a2+a4+a6+a8+a10=15 then find a1.

55. ## math

1.Which of the following numbers are equivalent to 20%? CHOOSE ALL THAT APPLY.!! A. 0.002 B. 1/4 C. 0.20(I PICK THIS) D. 1/5(I PICK THIS) 2.which of the following numbers are equivalent to 35%?CHOOSE ALL THAT APPLY !! A. 7/20 B. 6/20 C. 3.5 D. 0.35 (I KNOW

56. ## Physics

A small, nonconducting ball of mass m=1.0mg and charge q=2.0*10^-8 C (distributed uniformly through it's volume) hangs from an insulated thread that makes an angle theta = 30 degrees with the vertical, uniformly charged nonconducting sheet. considering the

57. ## Math

A quadrilateral is a ____ if and only if one pair of opposite sides are parallel and the other pair of opposite sides are congruent. Choices: Kite, Parallelogram, Rhombus, Square, or rectangle

58. ## Statistics

The prize for winning a contest can be chosen from category A or category B. Prizes from category A have a mean of \$1000 and a standard deviation of \$50. Prizes from category B have a mean of \$1000 and a standard deviation of \$300. Describe an advantage of

1.D 2.A 3.A 4.im not sure please help 5.false One light bulb in a string of lights goes out. This causes all of the other lights in the string to also go out. This is an example of a A. resistor. B. parallel circuit. C. closed circuit. D. series circuit.

60. ## Statistics

A large furniture store has begun a new ad campaign on local television. Before the campaign, the long term average daily sales were \$24,819. A random sample of 40 days during the new ad campaign gave a sample mean daily sale of x(bar)=\$25,910 with sample

61. ## Mathematics!

A cereal factory has weekly fixed costs of \$48,000. It costs \$1.37 to produce each box of cereal. A box of cereal sells for \$3.99. Express the profit function p(x) that gives the total weekly profit from x boxes of cereal.

62. ## Math

A box has a bottom with one edge 7 times as long as the other. If the box has no top and the volume is fixed at V, what dimensions minimize the surface area?

63. ## accounting

Mr. Jones intends to retire in 20 years at the age of 65. As yet he has not provided for retirement income, and he wants to set up a periodic savings plan to do this. If he makes equal annual payments into a savings account that pays 4 percent interest per

64. ## Chemistry

Hey, can you help me balance this equation? Cu2S + HNO3 --> Cu(NO3)2 + CuSO4 + NO2 +H2O Thanks!

65. ## ACC

someone help me with this questions please 1. How would the following costs be classified (product or period) under variable costing at a retail clothing store? Cost of purchasing clothing Sales commissions A) Product Product B) Product Period C) Period

66. ## geometry

A rectangle with a width of 9 ft. and a length of 13 ft. is the base of a 30 ft. tall pyramid. What is the volume of the pyramid? 117 cubic feet 1,170 cubic feet 390 cubic feet 3,510 cubic feet

67. ## English

Book: Nickel and Dimed Ehrenreich is somewhat surprised that low-wage workers in Minnesota aren’t treated better than low-wage workers in other states because A. Minnesota has a low unemployment rate B. it is a relatively liberal state and tries more

68. ## Math

. Alex plays rugby and can burn approximately 650 calories in a 1.25-hour game. Danielle enjoys kickboxing and can burn approximately 420 calories in a 45-minute class. Who burns calories at a higher rate?

69. ## math

how many students are in the sample 15 20 22 25

70. ## Calculus application of sin function

a horizontal position of the pendulum of a grandfather clock can be modelled by h(t)=Acos(2(pi)t/T), where A is amplitude of the pendulum in meters, t is time in seconds, and T is the period of the pendulum, in seconds. If the pendulum has a velocity of

71. ## Math

On a trip of d miles to another city, a truck driver's average speed was x miles per hour. On the return trip the average speed was y miles per hour. The average speed for the round trip was 50 miles per hour. Show that y=25x/(x-25) Find the limit of y as

72. ## Math

Three pictures hang side by side on a wall. What is the total area of the wall that the pictures cover? Length is 10 1/2 inches, 10 1/2 inches, 10 1/2 inches Width 14 2/3 inches Would I need to add 10 1/2 plus 10 1/2 plus 10 1/2 and then multiply by 14 2/3

73. ## Physics

A DIVERGING lens has a focal length of 35 cm. (a) Find the image distance when an object is placed 48 cm from the lens. (b) Is the image real or virtual magnified or reduced? I am very lost and don't even know where to start

74. ## Math

Could someone check my work? A 200-foot cliff drops vertically into the ocean. The angle of elevation from a ship to the top of the cliff is 22.3 degrees. How far offshore, to the nearest foot, is the ship? Tan(22.3) = 200ft/x xtan(22.3)=200ft

75. ## Spanish

Esta mañana nos (1) _____ temprano en carro sin mapa. Al (2) _____ de la ciudad, Jorge (3) _____ al empleado de una gasolinera dónde (4) _____ el carril para acceder a la autopista. El empleado no (5) _____ contestarle porque no (6) _____ a dónde (7)

76. ## SPANISH

EL PRETÉRITO. Modifique el párrafo por cambiar los verbos italizados al pretérito. Ejemplo: Tenemos que preguntarle al revisor. Tuvimos que preguntarle al revisor. Voy___(1)___ a coger el tren para irme de vacaciones a la sierra. Ya no me queda___(2)___

Two brothers, Sam and Jim, were fighting over the division of their ancestral property. After ten years of legal battle, a frustrated Sam contacted a powerful politician who subjected Jim to extreme duress in order to make him sign a contract of assent in

78. ## math

A square has the same area as a rectangle whose longer side is 2 times the length of its shorter side. If the perimeter of the rectangle is 24, what is the perimeter of the square? I have no idea how to do it. I need help.

79. ## math

1.which of the following represents a unit rate? A.\$4/12 B.5/2 C.80/1(I PICK THIS) D.72/2

81. ## Chemistry

If the absolute temperature of a gas is doubled, what happens to the root-mean-square speed of the molecules?

82. ## Programming and Design

Draw the hierarchy chart and design the logic for a program that calculates the projected cost of an automobile trip. Assume that the user's car travels 20 miles per gallon of gas. Design a program that prompts the user for a number of miles driven and a

83. ## english

Can someone please help, I'm supose to write explaining what advice one would give George and Lydia Hadley on how to be become better parents. I don't understand this passage so I don't know what to write. "I don’t know anything," he said, "except that

84. ## english

Scientists report (1) that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food shortages. Which may be a result of rising sea

85. ## math

what problem did the dumb gangster have when the boss told him to blow up a car?

86. ## Physics

I am having trouble with the last portion of this question. If someone can help me, I would sincerely appreciate it. A bicycle wheel has a radius R = 32.0 cm and a mass M = 1.82 kg which you may assume to be concentrated on the outside radius. A resistive

87. ## algebra

what did the beaver say to the tree? using only these letters egatkwolifunydcsmb. you may use these letters more than once

What are the formal and functional regions of seattle washington???

89. ## ACC

A reason why absorption costing income statements are sometimes difficult for the manager to interpret is that: A)they omit variable expenses entirely in computing net operating income. B)they shift portions of fixed manufacturing overhead from period to

90. ## English

Marco is overwhelmed by the rude customers, but he never loses his A. aplomb

91. ## math

U2 is an Irish band that has been popular for over three decades. The lengths of 80 of their songs were selected at random and are listed in the table below. Lengths of Randomly Selected U2 Songs. ? (seconds) 382 222 214 338 310 559 334 225 177 189 278 300

92. ## Math logic and reasoning

1. Tyson was working with square numbers. He noticed a pattern for squaring consecutive numbers that end in 5 note:top column has 5^2,15^2,25^2,35^2 note: Bottom column shows answers of top column so 5^2=25,15^2=225,25^2=625, 35^2=1225 A.) Identify a

93. ## Math

Question: 168.72/0.024=7.03 When I do this calculation on paper the above answer is what I get but when I do this calculation on a calculator I get 7,030.00 what I am doing wrong?

Gabriele enters an east-w straight bike path at the 3.0-km mark and rides w at a constant speed of 8.0 m/s. At the same time, Xena rides east from the1.0-km mark at a constant speed of 6.0 m/s. 1. Write function x(t) that describe the position of Gabriele

95. ## Math (PreCalculus)

The second hand of a clock is 4 inches long. Describe the height of the tip of the second hand from the bottom of a clock. (The radius of the clock is 1 inch more than the length of the second hand.)

96. ## math question

/how do i solve this? The probability of winning a game is 15%. If you play 20 times,how many times should you expect to win? A.5 times B.3 times C.6 times D.15 times

97. ## new social studies

1.C 2.A 3.B 4.C 1.Which of the following most contributes to deforestation of the amazon rain forest? A. mining B. lumber miliing C. road construction D. tourism 2.Which of the following is an immediate negative effect of deforestation of the amazon rain

98. ## social studies check answers

1.D 2.A 4.C 1.“Along the southern coast of Brazil the central plateau descends in high, steep escarpments. It towers over the waves and moves back in ridges, leveling off from the peaks of the coastal ranges … As it continues along to the northern