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x=4

Step-by-step explanation:

Since AZ is half of AD. If AD=24, then AZ=12.

And the equation for AZ is 2x+4.

So 2x+4=12.

Subtract 4 on both sides: 2x=8.

Divide by 2 on both sides: x=4.

Hope this helps!

never fear papaguy is here

answer

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.