She used the diameter instead of the radius :) instead of cubing 8 she should’ve cubed 4
1g-1.5=-4g-4 (distribute 1/2 and -4 inside their respective parenthesis)
1g=-4g-2.5 (add 1.5 to -4)
5g=-2.5 (add 4g to 1g)
g=-0.5 (divide both sides by 5)
Answer:

Step-by-step explanation:

Answer:
2/13 times 21 = 3.2
Step-by-step explanation:
Answer:
It's the last one
Step-by-step explanation:
(3x-1)-(x²+4)
3x-1-x²-4
-x²+3x-5