Obtain an equivalent system by performing the stated elementary operation on the system. Multiply the third equation by 1/8. 7x - y + 8z + w = -10 8x - z - 2w = 7 8x - 16y + 7z - w = -24 x + 3y - 8z = 1

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

20 points 1. your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph. 2. taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1

C. using a standard deck of 52 cards, the probability of selecting a 4 of diamonds or a 4 of hearts is an example of a mutually exclusive event. true of false