Explain to me how you get y and what y is for both problems

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4.

cos (angle) = Adjacent leg / hypotenuse

Cos(30) = Y / 16

Y = 16 * cos(30)

Y = 8√3

5.

cos(angle) = Adjacent Leg / hypotenuse

cos(Y) = 55/75

y = Arccos(55/75)

Y = 42.833 degrees.  (Round answer as needed)

2,600 divided by 80 = 32.5

step-by-step explanation:

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5