Look at the sample work below. 6Of
2x-8= 12
{}2x+8=(): 2
X-8=6
X-8+8= 6+ 8
X= 14
Which error, if any, was made?
O The substitution property of equality was not applied correctly.
The addition property of equality was not applied correctly.
The multiplication property of equality was not applied correctly.
No errors were made.

18

step-by-step explanation:

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step-by-step explanation:

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.