How do you use cross products to solve 4/p=14/28?

1 Answer
Jim G.
Aug 25, 2017

p=8

Explanation:

"using the method of "color(blue)"cross-products"

•color(white)(x)a/b=c/drArrad=bc

rArr4/p=14/28

rArr14p=4xx28

rArrp=(4xxcancel(28)^2)/cancel(14)^1==4xx2=8

color(blue)"As a check"

Substitute this value into the left side of the equation and if equal to the right side then it is the solution.

"left side "=4/8=1/2

"right side "=14/28=1/2

rArrp=8" is the solution"

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