Question

help please

Answer 1

which side in the bigger figure corresponds to the side labeled "x" in the small figure?

Answer 2

900

Answer 3

yes. They tell you the figures are *SIMILAR*
that means the same shape, but one is bigger than the other.
the ratio of small to big is 1/9

that means if the big side was 9, the corresponding side in the small figure would be 1

any idea what x is ? (the "big" side is 900)

Answer 4

100

Answer 5

yes,x=100

we could use ratios:
\[ \frac{x}{900}= \frac{1}{9} \]
multiply both sides by 900:
\[ \frac{x}{\cancel{900}}\cdot\cancel{900}= \frac{1}{9} \cdot 900 \\
x= 100\]