Answer:
d
Step-by-step explanation:
8 because only the green marbles got added
Answer:
l=40
Step-by-step explanation:
The area is calculated as
A = wl
1200=30l
1200/30=l
40=l
Answer:
The length of the case is 17 inches.
Step-by-step explanation:
A flute case is shaped like a rectangular prism with dimensions:
- height = 5 inches;
- width = 3 inches;
- length = x inches.
The volume of the case is 255 cubic inches.
Use formula for the volume of the rectangular prism:

Thus,

The length of the case is 17 inches.
Hello from MrBillDoesMath!
Answer: 5n - 2
where "n" is the number mentioned in the problem statement
Thank you,
MrB