Answer:
Let l be the length and w the width of the rectangle.
P as the perimeter and A as the area.
length of a rectangle is four times the width:
w = w
l = 4w
System of equation : 2l + 2w = P
Substitute:
2(4w) + 2w = 45
8w + 2w
10w = 45
w = 45 / 10
w = 4.5
Solve for l:
l = 4w
l = 4(4.5)
l = 18
Area:
A = lw
A = 18(4.5)
A = 81 in²
Answer:
Step-by-step explanation:
The area of a regular polygon is calculated using the formula;
where 
is the apothem and p is the perimeter.
It was given that, the apothem is, 
and the perimeter is 
We substitute into the formula to obtain;
To the nearest square inch, we have;
Answer:
x=15
Step-by-step explanation:
75/5=x 15x5=75
Answer:
IT IS C I BET YOU 6 AND 8
Step-by-step explanation:
It will be b because you will have to time $3.50P140= 490
