Mark is solving the following system (1)
X+ y + z = 2
3x+2y + Z = 8
4x-y-73= 16
(2)
(3)
Step 1: He multiplies equation (1) by 7 and adds it to equation (3)
Step 2: He multiplies equation (3) by 2 and adds it to equation (2)
Which statement explains Mark's mistake?

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

286 divided by 457.6 what is the quotient?

Mr. roseanne will buy 12 1/2 pounds beef for for a cookout. the price for the first 3 pounds of beef is $4.99 per pound. after that, the price is $4.49 per pound. how much will mr.roshan pay for the beef