Set up variables:
l = length
w = width
p = perimeter
A = area
Relations:
A = lw
32 = 2l + 2w (perimeter)
l = 3w
Find the missing info:
32 = 2(3w) + 2w (solve for w)
32 = 6w + 2w = 8w
w = 32/8 = 4
If width equals to 4, then length would be 4 * 3, 12.
Area = 12 * 4 = 48
Answer:
width is 7.5
Length is 8
Step-by-step explanation:
because it is
For right triangles, use SOH CAH TOA.
Given angle is 27, given sides are 'x' and 20.
Which sides are given, opposite, adjacent, or hypotenuse?
opposite is across from angle(27) -----> unknown
adjacent is leg next to or touching the angle(27) -----> 'x'
hypotenuse is side across from right angle -----> 20
which trig ratio uses adjacent and hypotenuse?
CAH has both A for adjacent and H for hypotenuse.
Therefore use the cosine ratio.
Substitution, elimination, and graphing.
The population grew by 8, or 10%.
The gains from births and immigrating in were 21+6=27. The losses from deaths and emigrating out are 12+7=19. (Since it is a loss, it will be -19.)
27-19 = 8 total gained; 8/80 = 1/10 = 10%