3x-12= 3x + 7
+12 +12
3x = 3x + 19
-3x -3x
x = 19
<h3>the square root of 81</h3>
<h3>Is Nine(9)</h3>
To find the hypotenuse of a right triangle, use the formula for the pythagorean theorem. This is a^2+b^2=c^2, with the two side lengths as a and b and the hypotenuse being c. So, 28^2+21^2=1225
1225 is your hypotenuse length!
Please make me brainliest <3
