1. Economics

Suppose Honda's total cost of producing 4 cars is $225,000 and its total cost of producing 5 cars is$250,000 a)What is the average total cost of producing 5 cars b)What is the marginal cost of the fifth car? c)Draw the marginal cost curve and the average

2. Math

If the outer diameter of a metal pipe is 2.84 inches and the inner diameter is 1.94 inches, the thickness of the metal is A. 0.45 of an inch B. 0.90 of an inch C. 1.94 inches D. 2.39 inches

3. Math

1. A gardener has 140 feet of fencing to fence in a rectangular vegetable garden. Find the dimensions of the largest area he can fence. Find the possible rectangular area he can enclose. 2. Suppose a farmer has a large piece of land and he wants to make a

4. Physics

Calculate the height through which a crane can lift a load of 4t , when its motor of 4HP operates for 10s. [Take g=10N/kg ]

16. statistics

4. The average family income in the town of Seneville is $45 000, with a standard deviation of$9000. Assuming that family income is normally distributed, determine the income level below which 80% of the families in this town earn

17. math

What is the area of a square computer screen with 21-in. sides? A. 84 sq. in. B. 220 sq. in. C. 42 sq. in. D. 441 sq. in. please help

18. Civilization

What do you think about the rules of civilization? Do they free us and enable us to rise to our best selves? Or do the rules constrain our bad nature that lie at the heart of ourselves?

19. math

A rectangular bin 4 feet long, 3 feet wide, and 2 feet high is solidly packed with bricks whose dimensions are 8 inches, 4 inches, and 2 inches. The number of bricks in the bin is A. 54 B. 648 C. 1298 D. NONE

20. english

4. In both the Gettysburg Address and “Letter from Birmingham Jail,” the writers (1 point) comment on the tribulations faced by a nation at war. honor those who have fought for freedom. demand the revision of the nation’s unjust laws. expound on the

21. Complex Numbers

The system of equations |z - 2 - 2i| = \sqrt{23}, |z - 8 - 5i| = \sqrt{38} has two solutions z1 and z2 in complex numbers. Find (z1 + z2)/2. Im really just plain old confused. Could anyone help me out?

22. Math

A bell rings every 2 seconds, and a bird chirps every 3 seconds. If the ring and the chirp occur together right now, they will occur together in A. 40 seconds B. 41 seconds C. 42 seconds D. 43 seconds

Six quarts of a 20% solution of alcohol in water are mixed with 4 quarts of a 60% solution of alcohol in water. The alcoholic strength of the mixture is. A. 80% B. 50% C. 36% D. None I HAVE NO IDEA HOW TO DO IT PLEASE HELP

24. Math

What is the scale factor as a percent that will result if the rule is applied to a point (x,y) on a coordinate grid? 1. (1.5x,1.5y) is it, 150% 15% 1.5% or none of these? 2. (0.7x,0.7y)is it 700% 7% 0.7% or none of these?

25. maths

A snapshot measures 2 1/2 inches by 1 7/8 inches. It is to be enlarged so that the longer dimension will be 4 inches.The length of the enlarged shorter dimension will be 1. 2 1/2 inches 2. 2 5/8 inches 3. 3 inches 4. 3 3/8 inches 5. 3 5/8 inches

26. maths

A motorist travels 120 miles to his destionation at an average speed of 60 miles per hour and returns to the starting point at an average speed of 40 miles per hour.His average speed for the entire trip is 1. 53 miles per hour 2. 52 miles per hour 3. 50

27. science

what do sporangia, cone and flowers have in common? how do they differ?

28. Trigonometry

Find the perimeter of a pentagon circumscribed about the circle that has a radius of 1.5 units.

29. Geometry: Area and Volume Math

What is the volume of a cube shaped box with edges 6 cm. in length? A. 1,296 cu. cm. B. 36 cu. cm. C. 18 cu. cm. D. 216 cu. cm. please help

30. statistics

1) One hundred clients of a registered tax agent fall into the categories of personal (25 male, 30 female), corporate (10 male, 15 female) and small business (8 male, 12 female). The agent selects one of the clients at random to begin work. Find the

31. phy

A body hangs from a spring balance supported from the roof of an elevator. If the elevator has an upward acceleration of 3ms−2 and the balance reads 50 N, what is the true weight of the body?

32. statistics

You want to estimate the difference in grade point averages between two groups of university students to be accurate within 0.2 grade point, with probability approximately equal to 0.95. If the standard deviation of the grade point measurements is

33. Earth Science

A scientific hypothesis can become a theory if? a- the entire scientific community accepts it b- the hypothesis is tested extensively and competing hypothesis are eliminated c- there are no other competing hypothesis d- the hypothesis can be tested at

34. math

If a TV set is bought on the installment plan there is a down payment of $25 and 12 monthly payments of$15 each. The same set may be bought for cash at 12% less than the installment price. The amount saved by making a cash payment is:

35. english 3

In the following stanza from “I heard a Fly buzz—when I died—,” which words form a slant rhyme? The Eyes around—had wrung them dry— / And Breaths were gathering firm / For that last Onset—when the King / Be witnessed—in the Room —

36. Math

The cost of a telephone call is $0.75 +$0.25 ties the number of minutes. Write an algebraic expression that models the cost of a telephone call that lasts t minutes.

37. math

If a TV set is bought on the installment plan there is a down payment of $25 and 12 monthly payments of$15 each. The same set may be bought for cash at 12% less than the installment price. The amount saved by making a cash payment is:

38. Accounting

On October 10, 2010, Mason Engineering Company completed negotiations on a contract for the purchase of new equipment. Under the terms of the agreement, the equipment may be purchased now or Mason may wait until January 10, 2011, to make the purchase. The

39. Science

If a nuclide has a decay constant of 10^-6 s-1 what is its half life ??? I think it is 0.693 / 10^-6 = 693000 or 6.93 x 10^5 Is this right ...

40. statistic

in a beacside it rains on 20percent of days and is windy on 30percent a days.if rain and wind are independent on any particular days find the probability that it rains and it windy

41. math test review

2. If 4% of motorists on the New Jersey Turnpike leave at a certain exit and 5% of these go to one particular motel for lodging, out of every 10,000 motorists how many motorists may be expected to go to this motel? A.2 B.10 C.20 D.100 E.200

42. ENG1511

Pharaphrase the sentence'' in my experience as both learner and later a langauge practitioner,one has to have a driver that will obstinately motivate one to succeed against all add''

43. phy

A 50kg boy suspends himself from a point on a rope tied horizontally between two vertical poles. The two segments of the rope are then inclined at angles 30 degrees and 60 degrees respectively to the horizontal.The tensions in the segments of the rope in

44. Precalculus

Find the complex number z that satisfies (1 + i)z - 2 overline{z} = -11 + 25i. Im not sure how to solve this. I tried distributing the z out first but im still confused on this problem.

45. physics

If a nuclide has a decay constant of 10^-6 s-1 what is its half life ??? I think it is 0.693 / 10^-6 = 693000 or 6.93 x 10^5 Is this right ...

46. mathematics

A bell rings every 2 seconds, and a bird chirps every 3 seconds. If the ring ant the chirp occur together right now, they will occur together in A. 40 seconds B. 41 seconds C. 42 seconds D. 43 seconds

47. math

If A is 25% more than B, the B is ? less than A. A. 10% B. 15% C. 20% D. 25%

48. math

A micro-millimeter is defined as one millionth of a millimeter. A length of 17 micro-millimeters may be represented as A. .00017 mm. B. .0000017 mm. C. .000017 mm. D. .00000017 mm.

49. math

What is 10% decrease of the number four? A) 3 B) 15 C) 18 D) 20 E) 30 Lucky guess... C?

50. math

please anwer these: 1) how can i multiply and divide polynomials containing radicals? 2) how can i solve radical equations? 3) how can i solve qudratic equations by factoring ? 4) how can i solve quadratic equations graphically ? thank you !!!!!

51. math

list all the possible integral zeros: P(x)= x^3-2x^2-11x+12

52. Kimbe secodary

Calculate percentage composition of nitrogen in amammonia

53. phy

A rope suspended from a ceiling supports an object of weight W at its opposite end. Another rope tied to the first at the middle is pulled horizontally with a force of 30N. The junction P of the ropes is in equilibrium. Calculate the weight W and the tens

54. statistics

A research organization claims that the monthly wages of industrial workers in district X exceeds that of those in district Y by more than Rs 150. Two different samples drawn independently from the two district yielded the following results: District X: 1

55. math

If ray BD bisects right angle ABC, the measure of angle ABD is A. 180 degrees B. 90 degrees C. 50 degrees D. 45 degrees

56. Math

What is 100x=

57. English- Help Ms. Sue

Which of the following is less likely to be the purpose of descriptive writing> A. to call people to action B. to entertain readers with a funny story******* C. to recount the events of a historical date I think it is B....can you confirm?

58. math

The spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 27 inches, how long is each spoke? Round your answer to the nearest hundredth. A. 2.93 B. 2.07 C. 8.59 D. 4.30

59. Biology: Genetics

18.Which of these is true of meiosis? A. n → 2n B. n → n C. 2n → n D. 2n → 2n Is C. the right aswer?

60. Biology: Genetics

18.Which of these is trueof meiosis? A. n → 2n B. n → n C. 2n → n D. 2n → 2n Is it C.?

61. math

Finance charge was 5.58 on a monthly balance of 318.76. What is the rate?

62. maths

If a @ b is defined for all positive integers a and b by the equation a @ b = a(b-a),then 4 @ (3 @ 5)= 1. 2 2. 6 3. 8 4. 22 5. 28

63. math

sketch the plane x+2y-z=6. if you need help,find a third line by letting z=0 and then graph the resulting equation in the xy plane

64. maths

The difference between the second and fourth terms of an arithmetic sequence is 3. If the product of the first and fourth term is 34, calculate the value of the first term.

65. math test review

5. A teacher prepares 12 sheets of colored paper for each of sheets her 25 pupils. If 5 pupils are absent, how many sheets of colored paper can each pupil now have? A.10 B.15 C.18 D.20 E.24 I think the answer is A.

66. math test review

15. Scott knows that the area of the center circle of the basketball court in the school gym is 110 square feet. He wants to find the radius of the center circle of the basketball court in the school gym. He determines that the square of the radius is 34

67. math

Which one of the following is an even number? A. 198^7 B. 19x98 C. 19^87 D. 1+9+87 I know I can just solve each one but is there a faster way?

68. MAth

absolute value ? All numbers are inside bars (sorry don't know how to make bars) -1 + 4 + 3/-2 = 5 + 3/2 = 6.5 am I on the right track

69. Math

draw the following parabola: a. principal axis parallel to x; LR=1; passing through (3,1) and (-5,5); opens to the right. b. principal axis parallel to x; passing through (0,4), (0,-1) and (6,7)

70. English

Along the back Fence shuffled what looked like a large grey cat

71. algebra

x+4/8=x-2/6 6(x+4)=8(x-2) 6x+24=8x-16 8x-16=6x+24 8x-6x=24+16 2x=40 x=20

72. Maths

Suppose thatthe joint density of X and Y is given by (x,y)=e-(x/y).e(-y) ,0

I think its True During the Stone Age, people invented tools such as daggers, spear points, and hand axes, and made them mostly out of stone. A. True B. False

74. Maths lit

Good people can you please help me on how to calculate exclusive Vat and inclusive Vat and price before Vat. Any answer accepted

75. Algebra

How many square feet of grass are there on a trapezoidal field with a height of 75 feet and bases of 125 feet and 81 feet. I know the formula is A = h( b + b) / 2 A = 75 ( 125 + 81) / 2 A = 75 ( 206 ) /2 OK, my question is do you divide the 206 by 2 and

76. science help

where are the science helpers is this a connection for math help only

Let A = {1,2,3,4}. Prove the statements (a) and (b). You must describe the relations on A as a subset of AxA and also draw their arrow diagrams. (a) There exists a relation R on A so that R is refexive, symmetric but not transitive. (b) There exists a

78. algebra

radicand equation of 1/2n+3=3 There is an index of 4 1/2n+3=3x3x3x3 1/2n +3=81 1/2n=81-3 1/2n=78 n=39

79. geometry

Given 3(2x+4)+18=72 AND a=x , prove a=7

80. Algebra

r * 1 = r is an example of what kind of property of multiplication?

81. Algebra

Is (5v+2) + 14x = 5v + (2+14x) an example of associative property of addition? My answer is yes

82. math test review

7.There are 400 couples competing in a dance contest. After each half hour one-fourth of the contests-ants are eliminated. How many couples will remain eligible fore the prize after the first hour? A.300 B.250 C.225 D.200 E.150

83. math corrections

There are 10 men spent 10 days finishing one project. If we need to finish the project by 5 days, how many more men do we need? A.1 B.5 C.10 D.15 E.20 Choice E is wrong, i'm starting to think that choice B is the answer.

84. ias question

how do we write 12 aug 2014 in 5 letters without using numbers..

85. Precalculus

Let a and b be real numbers. The complex number 4 - 5i is a root of the quadratic z^2 + (a + 8i) z + (-39 + bi) = 0. What is the other root? I tried working this problem and so far I got that (a+8i) - (4-5i)= (-39-bi)/(4-5i). Im not sure how to solve this

86. phy

A 150-kg ladder leans against a smooth wall, making an angle of 30 degrees with the floor. The centre of gravity of the ladder is one-third the way up from the bottom. How large a horizontal force must the floor provide if the ladder is not to slip?

87. Algebra 2

x-3/2x*6x^2/5

88. Economics

Critique BP’s handling of the Gulf oil spill from a communications perspective. What were their central messages? What were their major challenges?

89. physics

1. How many clories will be needed to change the temperature of 3kg of water from 30degree celsius to 100degree celsius? please show me how to compute this,

90. physics

1. what is the specific heat of an object if the heat needed to change its temperature from 40degree celsius to 75degree celsius for 75 kg of it is 536 kcal? Please show me how to oompute it.

91. math

If the number of square inches in the area of a circle is equal to the number of inches in its circumference, the diameter of the circle is A. 4 inches B. 3 inches C. 1 inch D. NONE

92. statistics

in a beach side suburb it rains on 20% of days and is windy on 30% of days. if rain and wind are independent, on any particular day find the probability that: (a) it rains and is windy (b) it does not rain and is not windy (c) it rains or it windy (d) it

93. Chemistry

I am given that volume of an unknown acid is 25 mL, volume of NaOH is 13 mL and concentration of NaOH is 1.0 M. I have a graph of a titration curve where the equivalence point is pH=9 (pH on y axis and volume of NaOH on x axis) How would i find the pKa

94. mathematics (word problems)

A prize for a computer contest includes a computer worth 1/2 of the value of the prize, a monitor worth 1/2 of the remaining value, a modem worth $200, and software worth$150. What is the total value of the prize. This is so challenging, I need help.

95. algebra

I have a radicand equation 3-s=3 There is an index of 3 3-s=3times3tomes 3 3-s=27 s=9

96. algebra

radicand equation d-1/3=4 d-1/3=4^ d-1/3=16 d=16-1=15 3d=15 d-5

97. algebra

radicand equation 3y+1/9=2/3 3y +1/9=2/3^ 3y +1/9=2/3 x2/3 3y+1/9 =4/9 3y=4/9-1/9 3y=3/9 y=3/9divided by3 y=1/3 divided by 3 y=1