Answer:
x
Step-by-step explanation:
7x+18−6(x+1)−12
start out with distributive property
7x+18+(-6x)+(-6)+(-12)
then add the common things together
x+0
answer is just x, or infine answers, you could put in anything for x
Answer:
4
Step-by-step explanation:
Answer:
d
Step-by-step explanation:
i did th etst hope it helps
Step-by-step explanation:
perimeter of semicircle=πr+2r

Answer:
c = -3
Step-by-step explanation:
7 = -3c -2
3c = -2 -7
3c = -9
c = -3