Answer:
50+25=75 minus 90= -15
Step-by-step explanation:
13 cm
Use Pythagora's theorem to solve for the hypotenuse of the triangle:
Where a and b are the two shorter legs, and c is the hypotenuse.
Replace the values in and solve for c:
4
f⁻¹(x) = x²+3, but none of that matters, since f(f⁻¹(x)) = x