Answer:
x = 2
Step-by-step explanation:
-4(3 - 2x) + 2x = 2 x 4
-12 + 8x + 2x = 2 x 4
-12 + 8x + 2x = 8
-12 + 10x = 8
-12 + 12 + 10x = 8 + 12
10x = 20
x = 2
In this henrik's class, there are 10 boys and 12 girls. What is the ratio of boys to girls? Express your answer as a fraction in
1 answer:
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Set up a proportion, cross multiply, and solve.
3(7.2) = 4(x)
21.6 = 4x
5.4 = x
Answer:
The perimeter is 66.9 units
Step-by-step explanation:
See the attached figure with letters to better understand the problem
step 1
In the right triangle ABD
<em>Find the length side AD</em>
----> by TOA (opposite side divided by the adjacent side)
Find the length side BD
---> by SOH (opposite side divided by the hypotenuse)
step 2
In the right triangle CDE
Find the length side CE
--> by CAH (adjacent side divided by the hypotenuse)
we have
substitute
Find the length side DE
--> by TOA (opposite side divided by the adjacent side)
step 3
Find the perimeter of the figure
The perimeter is equal to
substitute the values
