Find the value of x in the triangle shown below.

x=5

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2 +b^2 = c^2  where a and b are the legs and c is the hypotenuse

12^2 +x^2 = 13^2

144 +x^2 = 169

Subtract 144 from each side

144-144 +x^2 = 169-144

x^2 =25

Take the square root of each side

sqrt(x^2) = sqrt(25)

x = 5

3x3 = 9 and 2x2 = 4

step-by-step explanation:

the answer will be the last one