The interior angle of the regular pentagon below measures 108 and the pentagon has rotational symmetry. which of the following is the measure of an interior angle after a 90 rotation around the point of symmetry?
A. 108
B. 90
C.180
D.54

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?