Which of the following can you determine when you use deduction and start from giving set of rules and conditions.

a. non of these

b. what may be true

c. what must be true

d. what may be false

Does anyone know this? the andwer choices are: 79, 85, 101, and 135 degrees!

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) .

Given that abcd is a rhombus, what is the value of x?