Answer:
x=37
Step-by-step explanation:
We can use the Pythagorean Theorem, since this is a right triangle
a^2+b^2=c^2
a and b are the legs, in this case 12 and 35.
c is the hypotenuse, in this case, x. We know it is the hypotenuse because it is opposite of the right angle
12^2+35^2=c^2
144+1225=c^2
Add on the left side
1369=c^2
Take the square root of both sides
c=37
So, x=37
