<span>The ratio of the corresponding side lengths of similar triangles is called the <u>scale </u>factor.
This means that </span><span> all the sides of the small figure are multiplied by the same number to obtain the lengths of the corresponding sides of the large figure.</span>
3 in 350 is 300 the 3 in 403 is 3
Subtract 18 from 72 to get Michelle's current age.
72 - 18 = 54
Answer:

Step-by-step explanation:
Cross multiply, isolate the variable, and divide by the coefficient to solve.

Plug back in to check.

The smallest one is -2/7
The largest one is 8/9 The difference between them is
8/9 - - 2/7 =
8/9 + 2/7 =
7*8/9*7 + 2*9/9*7 =
56 / 63 + 18 / 63 =
74 / 63 =
1 11/63