Solve each proportion) 1. 4/m-8=8/2

2. x-3/x=9/10

3.5/r-9=8/r+5

4.n-5/n+8=2/7

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

16 more than the product of 5 and p