Mathematics, 08.07.2021 18:30 lisaboden1701
Mark is solving the following system.
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?
A. He added equation (3) instead of equation (2) in step 1.
B. He did not multiply equation (3) by the same number as equation (1).
C. He did not eliminate the same variables in steps 1 and 2.
D. He added equation the equations in step instead of subtracting them.
Answers: 3
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Mathematics, 22.06.2019 00:30
$5400 is? invested, part of it at 11? % and part of it at 8? %. for a certain? year, the total yield is ? $522.00. how much was invested at each? rate?
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Mark is solving the following system.
Step 1: He multiplies equation (1) by 7 and adds it to equati...
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