Answer:
C. 4 hours
Step-by-step explanation:
I know this because it needs to be increased 20 mph more and since it increases 5 mph each hour then it would need to be increased the 5 mph 4 times to reach 75 mph.
Answer:x=11
Step-by-step explanation:5 x 11= 55 + 2 = 57 and 3 x 11 = 33 and 57 + 33 = 90
Answer:
13 Cans
Step-by-step explanation:
If the lengths of the ceiling are 52 feet, the area would be 2704 square ft. 2704÷208=13
Answer:
Step-by-step explanation:
The area (A) of a rectangle is equal to the length (L) of one of its sides times its width (w)
(eq. 1)
And its perimeter can be calculated with the next formula:
P=2(L+w) (eq. 2)
Solving for <em>w </em>in eq. 1, and plugging it into eq. 2
(eq. 3)
(eq. 4)
We know that A=49m^2, plugging in this value into eq. 4, we finally get into the answer:
If the length of the rectangle is larger than its width:
We know that a length can't be negative value, so the only valid interval is L>7. The domine of P is then:
L>7