What is the measure of Zy? Hint: Zo is a right angle.

40

Step-by-step explanation:

If angle x is a right angle, meaning 90 degrees, and the right angle is dissected into two angles with one of them being 50 degrees that leaves 40 degrees left to complete the 90 degree right angle

13

step-by-step explanation:

distance formula is d=√(x2-x1)^2   +   (y2-y1)^2

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it