Which statement correctly identifies the mistake Joe made? in step 5, Joe should have added 1 to both sides of the equation instead of dividing both sides of the equation by --1. In step 2. Joe should have multiplied the first equation by 2 instead of by 3. in step 4, Joe simplified 27 + (-20) as 7 instead of simplifying to -7. In step 3, Joe multiplied the term -2y by 2 instead of by-2.

This question is incomplete as it lacks the actual question. The question describes how Joe solved a system of equations step-by-step using elimination method. The steps used by Joe are as follows:

1. The equations given are: 2x + y = 9 and 3x - 2y = 10.

2. Multiply the first equation by 3 to get 6x + 3y = 27

3. Multiply the second equation by -2 to get -6x - 4y = -20

4. Add the equations to get -y = 7

5. Divide both sides of the equation by -1 to get y = -7

The statement that correctly identifies the mistake Joe made is: In step 3, Joe multiplied the term -2y by 2 instead of by-2.

Step-by-step explanation:

Elimination method of solving a simultaneous equation in Mathematics involves removing one variable in order to solve another variable. In this case of equations:

2x + y = 9

3x - 2y = 10

Joe eliminates the x variable in order to solve for the y variable first. To do this;

- In step 2, he correctly multiplies the first equation by 3 to get 6x + 3y = 27

- In step 3, he multiplies the second equation by -2 to INCORRECTLY get -6x - 4y = -20

Joe made a mistake in this step 3 because he multiplied -2y in the original equation (3x - 2y = 10) by 2 and not -2. He should have gotten -6x + 4y = -20 if he multiplied by (-2). That is (-2 × -2y) to give +4y.

mark branliest

step-by-step explanation:

.6 is 1/2 of 12

the answer is actually d. i just took the test

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.