X/5 = y = z/-2 và (-x) - y + 2z = 160, Tìm 3 số x, y và z?

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?

Asap! i'm not good math and i'm lost.

The product of sin 30 degrees and sin 60 degrees is same as the product of