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torisob [31]
3 years ago
14

I need help with Equations and Inequalities Unit Test

Mathematics
1 answer:
Lerok [7]3 years ago
6 0
First answer: 10
Second answer: -12
Third answer: 20
Fourth answer: -15
Fifth answer: 6
Sixth answer: -5w -44
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Answer:

Step 2 has error and step 4 has error.

Step-by-step explanation:

Here we can see that elimination method is  applied to solve the  system  of equations  for which -2 is multiplied both sides of equation first

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but in step 2

left side is -2x-4y and the right side is -10 which has to be -20 which makes this step wrong and this is the error made by student.

in Step 4 also ,value of the y has to be 5 but student plugged y =1 which is also error by student.

Correct solution is

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