Question

Find the value of x.

Answer 1

s\[\frac{ x - 3 }{ 8 } =16\]

Answer 2

Typo. The s means nothing.

Answer 3

16:4

8:2

x-3:2.5

Answer 4

I'm not familiar with these ratios. 16/4? Or 16 = 4?

Answer 5

\[\frac{ 16 }{ 4 }\]

Answer 6

Since they're similar, you can set up a proportion. Make sure you keep the same triangle in the same fraction and the same sides in the same spot (numerator or denominator).

\[\frac{ x-3 }{ 16 }=\frac{ 2.5 }{ 4 }\]Now, cross multiply:\[4(x-3)=16(2.5)\]\[4x-12=40\]
Can you solve from here? :o)

Answer 7

\[4x - 12 = 40\]\[4x = 40 + 12\]\[4x = 52\]\[4x / 4x = 52 / 4x\]\[x = 13\]

Answer 8

Great! :o)