Answer:
138
Step-by-step explanation:
-7n + 9 because the common difference is -7, so you have -7n, and then by plugging in the term numbers and the values, you find out that you need to add 9 to the -7n, so the answer is -7n + 9
2x+2x+60=180 because the angles have to add up to 180
So you have
4x+60=180
4x=120
x=30
3 x 8 = 24
3 x -2 = -6
reply if you this was wrong or you needed a different answer pls >:(
