Answer:
a=-0.5
Step-by-step explanation:
Distributive property for left side, difference of squares for right side.
8a-9a^2=-40+36-9a^2
-9a^2 cancels out
8a=-4
a=-0.5
Let's calculate the actual area: it is 11*5.6*7.2 or 443.52 cubic meters. Is the 100+ cubic meters error reasonable? :)
Answer:
1920
Step-by-step explanation:
The volume of the rectangle is 1920.
Answer:
So, this week Linda will to practice 63 hours.
Best regards
Step-by-step explanation:
9 hours * 7 day/week
