# x varies directly with y and z x=1200,when y=20 and z=30. Find x when y=10 and z=20

98,392 results
1. ## math

p varies directly as q and the square of r and inversely as s write the equation of the relation find k if p=40 q=5 r=4 s=6 find p when q=8 r=6 and s=9 find s when p=10 q=5 r=2

If c varies directly as the square root of d, and c = 14 when d = 64, find c when d = 324.

3. ## variation

Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s and the square of t. -I

4. ## Algebra worksheet

Hello. My algebra teacher gave me this worksheet last week and everyone had to bring it yesterday and I haven't done it yet. Can someone please help me. He said Friday is the last day or he's going to take away some points. I've been having trouble with

5. ## Mathematics

M varies directly as n and inversely as p. if M=3, when n=2,and p=1, find M in terms of n and p

6. ## Math

If p varies directly as the square root of r and p=3.2 when r=4,find p when r=6.5

7. ## math

Suppose T varies directly as the 3/2 power of x. When x=16, T=160. Find T when x=4

8. ## math

P varies directly as the square root of q. P=8 when q =25 find p when q = 100

9. ## Math

M varies directly as the square of N. If N increases by 10%, find the percentage change in M

10. ## Algebra II

if y varies directly as x, if y=80 when x=32, find x if y=100

11. ## Math

Y varies directly as the square of x and y=96 when x=4 find the value of y when x=5

12. ## math

a variable y varies directly as the square root of a varies x,and equals 6 when x=4 find y when x=25

13. ## Pre-Algebra

If y varies directly with x, find the constant of variation with x = 4 and y = -24 If y varies inversely with x, find the constant of variation with x=5 and y = 10 If y varies directly with x, and y = 35 when x = 5 , find x when y = -7 If y varies directly

14. ## Algebra II

Suppose that y varies directly as the 3/2 power of x, and that y=192 when x= 16. find y when x=9.

15. ## math

t varies directly as the square root of l. If l=81, then t=10 what is the constant proportion? 1. a is directly proportional to b. If a = 15, then b = 9 2. M varies directly as n. If n = 2/3, then m = 1/4 3. T varies as the square root of L. If L = 81,

16. ## algebra 1

Suppose y varies directly as x and that y = 21 when x = 3. Find the value of y when x = 5. Would I be wrong if I said y = 35? In using y = kx with the 21 and the 3 k = 7. So if y = 35 and x = 5 then k = 7. Am I correct or am I way off course?

17. ## algebra

suppose that S varies directly as the 2/5 power of T, and that S=8 when T=32. Find S when T=243.

18. ## Math102

If x varies directly as y and y varies inversely as the square of z. How is x varies with z?

19. ## algebra

Find the value of y for a given value of x if y varies directly with x if y=2.52 when x=8.4,what is y when x=2.7 thanks

20. ## Math

Suppose y varies directly with x. If y = 6 when x = -2, find x when y = 15. a. ⅕ b. 5 c. -5 d. -⅕

21. ## algebra

I do not know where to start with this one. Suppose p varies directly as the square of z and inversely as r. If p = 32/5 when z = 4 and r = 10, find p when z = 3 and r = 36.

22. ## Math

DIRECT VARIATION 1. a is directly proportional to b.If a=15,then b=9 2. m varies directly as n.If n=2/3,then m=1/4 3. T varies as the square root of L. If L=81,then T=10 4.r varies directly as the square of t. If t=16,then r=6. 5. y varies as the cube foot

23. ## algebra

y varies directly with x. When y = 20, x = 50. Find x when y = 36.

24. ## algebra

z varies directly as x^2. If z=36 when x=3,find zwhen x=4.

25. ## Math

Find the value of y for a given value of x, if y varies directly with x. If y = –252 when x = 84, what is y when x = 74?

26. ## Algbra 2

If Z varies directly as X and inversely as Y, and Z = 9, when X = 5 and Y = 3, find X when Z = 18 and Y = 6

27. ## algebra

y varies directly with the square x. If y=8 when x=2, find y when x=3.

28. ## math

x varies directly with y and z x=1200,when y=20 and z=30. Find x when y=10 and z=20

29. ## Math

This is regarding direct variation. y varies directly as the square of R. If y = 128 when R = 8, find y when R = 5. Another one I cannot figure out: If x varies directly as y, and x = 32 when y = 8, find x when y = 10 Help!

30. ## Math

if y varies directly with x find the constant of variation with x=4 and y=-24. -6** 4 -96 6 if y varies directly with x and y=35 when x=5 find x when y=-7 1 7 -1** -5 if y varies directly with x and y =-12 when x=6 find x when y=-4. -2 3** -3 2

31. ## Algebra II

1. If y varies directly as x, and y=30 when x=4, find the constant of proportionality. 2. If y varies inversely as x, and y=2 when x=10, find x when y=4. 3. If a varies jointly as b and c, and a=-10, when b=12 and c=2, find a when b=8 and c=1/2.

32. ## variation

Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s and the square of t. -I

33. ## math

If p varies as the cube of and q varies directly as the the square of r what is the relationship between paund r

34. ## Math/Algebra

Im stuck on two problems and would really appreciate the help. 1. y varies jointly as a and b, and inversely as the square root of c. y=28 when a=2, b=7, and c=9. Find y when a=4, b=2, and c=4 2. y varies directly as x and inversely as the square of z.

35. ## Mathematics

If y varies directly as x, and x=9 when y=15,find y when x=33

36. ## Math

Suppose v varies directly as a g,and v=36 when g=4 find v when g=11

37. ## Algebra 2- Variation

If w varies directly as r and inversely as the square of p, if w= 25 when r=5 and p=4, find r when w=16 and p=8

38. ## Algbra 1

x varies directly with y and z x=1200,when y=20 and z=30. Find x when y=10 and z=20

39. ## Pre-Calc

1.) Suppose that y varies directly as x. If y is 5 when x is 30, the constant of variation is 150. True Or False 2.) If w varies directly as z and w = 9 when z = -6, find w when z = 3. 3.) If y varies directly as x and y = 2 when x = 4, find x when y = 4.

40. ## Variation

I have few questions that I need checked please and could you help me with the last question? Write an equation that expreses the relationship. Use k as the constant of varaiation. 1. s varies directly as h -I got: s=kh 2.a varies directly as the square of

41. ## mathematics

1.s varies directly as m 2.p varies inversely as n 3.j varies directly as q and inversely as the square of r 4.the pressure(p) of a gas is directly proportional to the temperature (t) and inversely proportional to its volume(v) 5.t varies directly as a and

42. ## Variation-Check Problems

Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s and the square of t. -I

43. ## Check my answers. Algebra

Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s and the square of t. -I

44. ## math

I'm having a little trouble solving inverse variation. I have four problems - 2 are solved using proportions, 2 are not --- why can they not all be solved using proportions? 1. y varies inversely with x. If y = 40 when x = 16, find x when y = -5 If I use a

45. ## algebra

I have no clue what to do here can you tell me how to figure this? If y varies directly with x, and y = 500 when x = 200, find the constant of variation k. Whenever you have a statement such as "....y varies directly with x..." you can write it as an

46. ## math

i kinda need help with these 2 please: assume (y) varies direcly as (x) if (x)=32 when (y)=6, what is the value of k? and (y) varies directly as (x) find the constant when (x)=0.5, and (y)=0.3 and can someone also explain what they mean by find the

47. ## Algebra

#1 The cost of butter is fixed. If 5lb. cost \$4.00, how much will 7 1/2 lb cost? #2 Y varies directly as X; That is Y/X = M. If Y = 6 when X = 3, find Y when X = 11. #3 In any triangle, A = 1/2 bh. When b is constant, (a) Does A vary directly as h? Why?

48. ## Math-Algebra

1. The surface area of a cube varies directly as the square of its edge. Find its surface are. 2. A certain object traveling at 24 meters per second has a kinetic energy of 72 joules. If the kinetic energy of that object varies directly as the square of

49. ## Math help

9). Hooke’s Law. The distance d when a spring is stretched by a hanging object varies directly as the weight w of the object. If the distance is 29 cm when the weight is 4 kg what is the distance when the weight is 9 kg? 10). Find the variation constant

50. ## algebra

if y varies directly as x, and y is -60 when x is -5, find y when x is 3 The mass of an object varies directly as its volume. The mass of the object is 150 grams when its volume is 600 cm3. Find the mass of the object when the volume is 950 cm3

51. ## Algebra II

y varies directly as x. if y=-5/8 when x=3/2, find x when y=2/5

52. ## Math

If x varies directly as y, and if x = 6 when y = 15, find y when x = 30

53. ## Mathematics

If y varies directly with x and y=30 when x=5, find y if x=-3

54. ## Math

If y varies directly as x and y is -48 when x is -8, find y when x is 7.

55. ## Direct variation algebra 2

If V varies directly as G, and V =36 when G =4. Find V when G =11

56. ## Algebra

If x varies directly as y and x=9 when y=2 find x when y is 6

57. ## Mathematics

y varies directly as x. If x=81 when y=90, find x when y=50

58. ## Algebra (direct variation)

the value of y varies directly with x, and y=-2 when x=-4 Find y when x=8 -2=k(-4)

59. ## algebra

the value of y varies directly with x, and y= -14 when x = 1/2. find y when x = -1.

60. ## college Algebra

If y varies directly as x^2 and y=20 when x=4, find y when x=7?

61. ## algebra 2

y varies directly with x. When y = 20, x = 50. Find x when y = 36.

62. ## Math

x varies directly as y3 . If x is 32 when y is 2, find x when y is –3

63. ## Math

W varies directly as x,y,and z. If w=36 when x=2, y=8, and z=12 find w when x=1 y= 2, and z=4

64. ## Variation-Questions

I have some questions that I don't understand and need to be checked please? Slove the problem. 1. y varies directly as z and y=187 when z=17. Find y when z=15 -This is how I did it: 187=k*17, I divided by 17 on both sides and got k=11, then I plugged it

65. ## algebra

Assume that Y varies directly as X. If Y = -11 when x = -4, find Y when x = 6.

66. ## Algebra

Find the value of y for a given value of x, if y varies directly with x. If y= -252 when x=84, what is y when x= 74?

67. ## algebra

Assume y varies directly as x. If x = 2 when y = 7, find x when y = 32.

68. ## math

Suppose y varies directly with x, and y= 8 when x= 4/3. Find y when x=2.

69. ## direct variation

For the statements below, y varies directly with x. Find y when x = −0.3.

70. ## Coordinate Algebra

Suppose y varies directly with x. If y = 6 when x = −2, find x when y is 9.

71. ## Math

Write an equation: x varies directly as y and inversly directly to the cube of Z

72. ## math

Y varies directly as X. When Y is 10, X is 15. Find Y, when X is 32. a. Can not be determined b. When X is 32 then Y = 165 c. When X = 32 then Y is; 21 1/3 d. When X is 32 then Y = 5

73. ## Math

Assume that y varies directly with x, then solve. If y=-18 when x=6,find x when y=6

74. ## College Algebra

y varies directly as the third power x and inversely as Z. If y=16 when x=4 and z=8,find y when x=9 and z=6

75. ## algebra

If f(x) varies directly with x, and f(x) =45 when x=9, find the value of f(x) when x=3 answer choices are: A.5 B.9 C.15 D.27

76. ## Math

find the constant of variation if y varies directly as x, and y=17 when x=24

77. ## Algebra 2

A measurement y varies directly with regard to another value x. If y = 9 and x = 24, find x for y = 25.

78. ## algebra2

y varies directly as the square of x. When x = 2, y = 40. Find x when y = 640.

79. ## mathematics

p varies directly as q and inversely as r if p = 4, p = 1 and r = 2 find p in terms of q and r

80. ## Math

How do I set up this equation? If Y varies directly as X and Y = 12 when X = 3, find Y when X = 16

81. ## Pre algebra

Find the constant of variation if y varies directly as x, and y=17 when x=34

82. ## Math

If (a) varies directly as (b) and b= 20 when a= 4, find (b) when a=60 I don't understand this question at all

83. ## college algebra

Solve each variation problem. n varies directly as q, and n= 39 when q=3. Find n when q=8.

84. ## Math

M varies directly as n and inversly as the squere of p. If m=3 when n=2 and p=1.find m in terms of n and p.

85. ## math

Find the constant of Variation K m varies directly with n;m=144 when m=8

86. ## algebra

Find the varition constant and an equation where y varies directly as x=16 where x=8

87. ## algebra

Determine whether y varies directly with x if so find the constant of variation k 3y=-7 x-18

88. ## math

p varies directly as the square of m inversely as n. if p =200 when m=5 and n=1/2 find p when m=6 and n=2

89. ## Algebra 2

Find an equation of variation where y varies directly as x and inversely as the square of w, and y=24 when x=8 and w=3.

90. ## algebra

Show all steps Find the value of y fora given value of x if y varies directly with x If y =-252 when x=84, what is y when x=74?

91. ## Algebra 2

Find an equation of variation where y varies directly as x and inversely as the square of w, and y=24 when x=8 and w=3.

92. ## Algebra 2

Find rarition constant and an equation of variation where y varies directly as x and y =60 when x = 10.

93. ## algebra1

M varies directly with n; m=144 when n=8. What is the constant of variation k? I don't know what this mean. Could you help me out in solving this/ A statement such as "M varies directly with n" can be changed to the equation M=kn, where k is a constant.

94. ## maths

if y varies directly as x,and x=9 and when y=15'find y when x=33

95. ## Pre-Calculus

If w varies directly as z and w = 9 when z = -6, find w when z = 3. a) 0 b) -4.5 c) -2 d) 4.5

96. ## mathematics

if y varies directly as the square of x and y=9 when x=9, Find x when y=15

97. ## Maths

If (x+3) varies directly as you and x= 3 when y= 12 Find the ; i)relationship between x and y ii) value of x when you = 8

98. ## math(algebra)

If f(x) varies directly with x, and f(x) = 45 when x=9, find the value of f(x) when x=3 answer choices are A. f(x)=8x B. f(x)=4/3x C. f(x)=6x D. f(x)=3/4x

99. ## intermediate algebra

Y varies directly with square root of X. Y=3 when X=4. find Y when X=1

100. ## Algebra2A

I am confused with this question: Find teh value of y for a given value of x, if y varies directly with x. If y = 6 when x = 2, what is y when x = 5?