Answer:
E. he multiplied 9 and 0.7 incorrectly.
Step-by-step explanation:
This is a question that can be solved with Pythagorean Theorem since it is a right triangle. The longest side, 29, is the hypotenuse and the sides 21 and x are the legs. So, the Pythagorean Theorem states,

Where,
c is the Hypotenuse, a and b are the legs. Putting the respective values gives us,

So, 20 is the side length of x.
ANSWER: 20
Answer:
552
Step-by-step explanation:
Answer: its D. 24
Step-by-step explanation: