Mark is solving the following system. x+y+z=2 3x+2y+z= 8 4x-y-72 = 16 (1) (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) cquation (2) Which statement explains Mark's mistake? Smistake? O He added equation (3) instead of equation (2) in step 1. He did not multiply equation (3) by the same number as equation (1). He did not eliminate the same variables in steps 1 and 2. O He added equation the equations in step instead of subtracting them.
3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.
Answer from: Quest
Dis the correct answer
Answer from: Quest
i believe a. 12x≥120 is the answer
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