Which properties justify the steps taken to solve the system?

{2a+7b=0
{3a-5b=31

drag the answers into the boxes to match each step.
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Step-by-step explanation:

The given equations are:

2a+7b=0 and 3a-5b=31

Statement                                                                    Reason

1. 10a+35b=0, 21a-35b=217    (Multiply first equation by 5 and second by 7)

2. 31a=217                                (Adding both the equations)

3. a=7                                       (Dividing both sides by 31)

4. 2(7)+7b=0                            (Substituting a=7 in first equation)

5.14+7b=0                                (solving step 4)

6. 7b=-14                                  (Subtracting 14 on both sides)

answer is d-29

step-by-step explanation:

since you didn't include the picture, i can give you the description so you know how to pick the correct answer. the third quartile of a data is always shown in a box plot. in the middle of your graph should be a box. the third quartile is the value that goes with the far right edge of the box.

300pi

step-by-step explanation: