The answer is:
c = 11.40175425
or
c = 11.4
diagram and Pythagorean :
Answer:

Step-by-step explanation:

Hope this helps ;) ❤❤❤
Answer:
81/64 or 1 17/64
Step-by-step explanation:
A negative exponent means to flip the fraction
(8/9) ^-2
(9/8)^2
81/64
Changing this to a mixed number
1 17/64
Answer:
-8
Step-by-step explanation: