Answer:
127
Step-by-step explanation:
n = 7
We are given the expression:
(2^n)-1
We also know that n=7. Therefore, we can substitute 7 in for n.
(2^7)-1
Evaluate the exponent first. 2^7 is equal to multiplying 2, 7 times.
2^7=2*2*2*2*2*2*2=128
2^7=128
128-1
Subtract 1 from 128
65 degrees because tangent chord angles are half the size of the arc
1 2 5
right I got it right on the test
The answer is in the image. Good luck!