BRAINLIST In the above figure, m∠A = 24° and m∠B = (2x + 20)°. If angles A and B are complementary angles, what are the value of x and the measure of angle B?

A.
x = 68, m∠B = 156°
B.
x = 23, m∠B = 46°
C.
x = 23, m∠B = 66°
D.
x = 47, m∠B = 66°

If 25% of y is 30, what is 60% of y?

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.

The lengths of the two sides of a right triangle are 5 inches and 8 inches what is the difference the possible lengths of the third side of the triangle