So I've been hearing this for a while now, is used exclusively for cheating?

hahaha

Step-by-step explanation:

so true and false at the same time

this maybe true if you have an exam papers in your hand right now. If its just random questions, then no pressure

c

step-by-step explanation:

i think because what else can be a sample of every member

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36