L:w=5:7
l/w=5/7
cross multiply
7l=5w
(7/5)l=w
P=2(L+W)
P=72
72=2(L+W)
divide both sides by 2
36=L+W
W=(7/5)L
36=L+7/5L
36=12/5L
times both sides by 5
180=12L
divide both sides by 12
15=L
W=(7/5)L
W=(7/5)15
W=21
length=15ft
width=21ft
dimeitions are 15 by 21ft
Answer:
How do I find the measure of an angle?
Using a Protractor
The best way to measure an angle is to use a protractor. To do this, you'll start by lining up one ray along the 0-degree line on the protractor. Then, line up the vertex with the midpoint of the protractor. Follow the second ray to determine the angle's measurement to the nearest degree.
Step-by-step explanation:
Is this a question or a answer
Answer:
the volume is 0.8 × 0.3 × 1.3 = 0.312 units cubed.
Step-by-step explanation:
After scaling down 1/10:
Length = 8 ÷ 10 = 0.8
Width = 3 ÷ 10 = 0.3
Height = 13 ÷ 10 = 1.3
F(x)=0
x^2+5x-14=0
(x-2)(x+7)=0
x=2 or x=-7
