Which statements can be used to justify the fact that two right angles are supplementary? check all that apply. a. a right angle measures 90°. b. if two angles are complementary, the sum of the angles is 90°. c. if two angles are supplementary, the sum of the angles is 180°. d. a complementary angle is one-half the measure of a supplementary angle. e. a supplementary angle is twice the measure of a complementary angle.

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.