Associate property because he was just rearranging the numbers using parentheses. Please mark me as brainiest!
Answer:
6
Step-by-step explanation:
(whole secant) x (external part) = (tangent)^2
(5+4) * 4 = x^2
9*4 = x^2
36 = x^2
Taking the square root of each side
6 =x
I believe 83/100 is the simplest form.
*A rational number is any number that can be written as the ratio of two integers, ab , where b is not 0.
Rational numbers include:
- Integers
- Fractions
- Mixed numbers
- Terminating decimals
- Repeating decimals