Petro was given this system of equations. Negative 14 x minus 2 y = 24. 14 x + 8 y = negative 12.

Petro’s work is shown in the table. Where, if anywhere, did Petro first make a mistake?

Steps
Petro’s Work

Step 1

Negative 14 x minus 2 y = 24. 14 x + 8 y = negative 12. 6 y = 12.

Step 2

6 y = 12. y = 2.

Step 3

Negative 14 (2) minus 2 y = 24. Negative 28 minus 2 y = 24. Negative 2 y = 52. y = negative 26.

step 1
step 2
step 3
no mistake

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step-by-step explanation:

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

1/6

step-by-step explanation: