What is the value of n in the equation (2n + 4) + 6 = –9 + 4(2n + 1)?

n = 15/6

Step-by-step explanation:

Step 1: Distribute

2n + 4 + 6 = -9 + 8n + 4

Step 2: Combine like terms

2n + 10 = 8n - 5

Step 2: Isolate n's

10 = 6n - 5

15 = 6n

n = 15/6

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.