Question

Help please ‍♀️ here are the answers

Answer 1

Answer:

CB = 20 or D

Step-by-step explanation:

Remark

You have a proportion. A proportion consists of 2 equal ratios. Three parts of the Proportion of 4 much be known. Then you can solve for the 4th.

Formula

Large vertical / Small Vertical = large horizontal / Small horizonal. Notice how Large goes on top of the ratios and small on the bottom.

Givens

Large Vertical: 8 feet

Small Vertical: 5 feet

Large horizontal: CA + 12.5 feet

Small Horizontal: 12.5

Solution

8/5 = (CA + 12.5) / 12.5             Cross Multiply

5(CA + 12,5) = 8 * 12.5              Remove the Brackets

5CA + 62.6 = 100                     Subtract 62.5 from both sides.

5CA = 37.5                               Divide by 5

CA = 7.5

CB = CA + 12.5

CB = 7.5 + 12.5

CB = 20

Answer

D