Answer:
x = 20.
Step-by-step explanation:
This is a right triangle, so by Pythagoras:
29^2 = x^2 + 21^2
x^2 = 29^2 - 21^2
x^2 = 400
x = √400
20
sqrt(29² - 21²)
sqrt(400)
= 20
-8x-15=25
+15 +15
<u>-8x</u>=<u>40</u>
-8x -8x
x=-5
Answer is just: p
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