20. Find the product of the expression: (4.2 x10^4) and (2x10^3) A. 2.1x10^1
B.
2.2x10^1
C.
6.2x10^7
D. 8.4x10^7

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

step-by-step explanation:

where does the z at is it on the x axes or on the y axes any way if it is on the y axes put it horizontally and if it is on the x axes put it vertically