Answer:



Step-by-step explanation:
Required
Simplify

Express 20 as 4 * 5

Split

This gives:



Express as 100 * 3

This gives:



Express as 64 * 2

Split



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<em>Questions 4 and 5 are not clear</em>
<em>Follow the steps in 1 - 3 to solve 4 and 5</em>
Answer:
10
Step-by-step explanation:
radius is the middle point of a circle, therefore divide it in half.
Answer:
6k + 19
Step-by-step explanation:
7k - k + 19
6k + 19