Math

If w is partly constant and partly varies directly as x and w=9 when x=4 w=27 when x= 16 find
An equation connection x and w
And (b) the value of w when x =8

  1. 👍 0
  2. 👎 0
  3. 👁 476
  1. w=kx+c
    9=k4+c
    27=k*16+c

    subtract eq 1 from eq 2
    18=12k solve for k
    then solve for c in either equation

  2. K=1.5,C=3 ,when x=8 w=15

    1. 👍 1
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    x is partly constant and partly varies as y, when y=2,x=0 and when y=6,x=20.find x when y=3

    asked by adeola on January 15, 2014
  2. Maths

    X is partly constant and partly varies as y . when y =2,x=15 and y =4, x=27 (a) find the formula which connects x and y (b) find x when y=7

    asked by Fienze on January 4, 2017
  3. maths

    D is partly constant and partly varies with V. when V=40, D=150 and when V=54, D=192. (i)find the formula connecting D and V (ii) find D when V =73.

    asked by gift on April 21, 2019
  4. Mathematics

    A is partly constant and partly varies with B. When B =5, A=19 and when B=10, A=34. Find A when B is 7

    asked by Anon on June 29, 2020
  5. math

    the charge for telephone call ,t,partly constant and partly varies with the number n of call. the bill for 420 units of call is 806,while the bill for 200units is 410 A)calculate the charge for 460 unit of electricity B)find a

    asked by moshoodibrahim on August 30, 2018
  1. Mathematics

    A is partly constant and partly varies as B .when B=14,and B =6,A=20.find A when B =3

    asked by Mercy on June 10, 2020
  2. Mathematics

    X is partly constant and partly varies with y.when y=3 x=11 and when y=4 x=14. A)find the relationship between x and y. B) fine x when y=10

    asked by Anonymous on June 4, 2020
  3. 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

    asked by kudu on February 9, 2015
  4. Maths

    V varies partly as q and partly as square of q .When V = 34 q = 2 ,and when V = 190, q = 5 .Find V when q = 10

    asked by Favour on November 5, 2019
  5. maths

    y is partly constant and partly varies as x, when x=5,y=8 and when x=6,y=4.find the equation of the variation of x and y.find y when x=15

    asked by Anonymous on September 10, 2018
  6. Math

    The resistance of the motionof a vechincle is partly constant and partly constant and partly varies to the square of its speed.At 30km/h the resistance is 496, and at 50km/h is 656N.Find the resistance at 60km/h

    asked by Adekunle Adebola on October 9, 2018

You can view more similar questions or ask a new question.