A I think
Step-by-step explanation:
I'm not 100% sure though
10 sides
360-72=288
288 divided by 2 is 144
Decagon have 144 degree interior angles
Answer:
distributivity/distributive property
Answer: so you do 5+8, then get 13. 13-5=8
Step-by-step explanation:
Answer:
D(- 1) = 2
Step-by-step explanation:
To evaluate D(- 1), substitute x = - 1 into D(x) , that is
D(- 1) = (- 1)² - 2(- 1) - 1 = 1 + 2 - 1 = 2