Answer:
-28
Step-by-step explanation:
15 inches
Tell me if you need me to explain
look this link up
https://mathbitsnotebook.com/Algebra1
0.89 g/cm³
used the formula d=M/V
M is mass which is = 80g
V is volume which is = 90cm³
d = 80/90
d = 0.89 g/cm³
