I really don’t know maybe you’ll have summer school that’s what we have to do if we fail an online course we have to go to summer school.
Just subsitute 8 for n
1/2(8)^2-1/2(8)
1/2(64)-4
32-4
28
D
Answer:
omgg they literally deleted 10 x 5
Step-by-step explanation:
it's 50, I'll be the calculator fam