Cole is finding the quotient of 78 ÷ 4. He creates this model to help him solve the division problem. 3 10-cube rods and 4 groups of 1 10-cube rod plus 2 unit cubes. Which statements are true about Cole’s work? Check all that apply.

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) .

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41