posted by .

A varies BC, when b=4,and c=9,a=6
a.find the formulea connecting A,B and C.
b.find A whenn B=3 and C=10
c.find C, if A=20 and B=15

  • math -

    Could you clarify what you mean by "A varies BC" please? I feel there's more to this question than reproduced here.

  • math -

    did you mean
    A vavies with BC or A varies directly with BC, if so, then

    a. A = kBC

    so, 6 = k(4)(9)
    k = 6
    then A = 6BC

    b. A = 6(3)(10) = 180

    c. 20 = (6)(15)C
    C = ......

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. 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 …
  2. Math

    I need the answers and the work shown steb by step today pls^^ For each direct variation find the constant of variation.Then find the value of y when x= -5 1.y=2 whne x=7 2.y=-2 when x=2 3.y= 17 when x=-4 y varies directly with x. …
  3. 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. …
  4. 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!
  5. 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 …
  6. math

    A quantity T is partly constant and partly varies as the square root of s. a) Using constant a and b, write down an equation connecting T and S. b) If S = 16, and when T = 24 and S = 36 when T = 32, find the value of the constants …
  7. 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 …
  8. 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
  9. maths (variation)

    different questions pls! Very urgent! 1) the force E needed to make a machine pull,a load is partly constant and partly varies as the load to be pulled itself.when the load is 20g,the force needed is 1.4n,where as the force needed …
  10. math

    if c is jointly varies as s and iversely varies as the forthroot of m where c=number and m=256 where s=55(1)find the formula connecting the variable?

More Similar Questions