Complete Question
Which equation could you use to solve for x in the proportion StartFraction 4 over 5 EndFraction = StartFraction 9 over x EndFraction?
- 4 x = 14
- 4 x = 45
- 5 x = 13
- 5 x = 36
Answer:
(B) 4x = 45
Explanation:
The given proportion is:
[Tex]\dfrac{4}{5}=\dfrac{9}{x}[/TeX]
To find an equivalent expression, let us cross multiply:
4*x=5*9
This gives:
4x=45
The correct option is B.