Question

Which equation could you use to solve for x in the proportion 4/5=9/x ?

Answer 1

Answer:
4x = 45 Chi3 is completely wrong

Explanation:

To solve for x in the proportion StartFraction 4 over 5 EndFraction = StartFraction 9 over x EndFraction, you can use the cross multiplication method.

First, multiply the numerator of the left fraction (4) by the denominator of the right fraction (x). Then, multiply the denominator of the left fraction (5) by the numerator of the right fraction (9).

This gives you the equation: 4x = 5 * 9.

Simplifying the equation, you get: 4x = 45.

To isolate x, divide both sides of the equation by 4: x = 45/4.

So, the correct equation to solve for x in the given proportion is 4x = 45.

Answer 2

`(9)/(x) = (4)/(5)`
dividing both sides by 9

`(1)/(x) = (4)/(5 * 9)`
rasing both sides to the power of -1

`x = (5 * 9)/(4) = (45)/(4)`