2 answers:
Answer:
x=20
Step-by-step explanation:
Since this is a right triangle, we can use the Pythagorean theorem
a^2 + b^2 = c^2
21 ^2 + x^2 = 29^2
441+x^2 =841
Subtract 441 from each side
x^2 = 841-441
x^2 = 400
Take the square root of each side
sqrt(x^2) = sqrt(400)
x = 20
Answer:

Step-by-step explanation:
<em>Hey there!</em>
Well to find x we need to use the Pythagorean Theorem, which is.

We have a which is 21 and 29 which is c.





So the missing side "x" is 20.
<em>Hope this helps :)</em>
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