In a right triangle, one of the exterior angles measures 155 degrees. what is the measure of the non-adjacent, non-right angle?
a: 55 degrees
b: 65 degrees
c: 75 degrees
d: 85 degrees

Katlyn made 4 dresses with 7 yards of fabric. how many yards did she use on 1 dress?

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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