3x - 4 = 18+5x
-3x -3x
-4-18 = 18 + 2x
-18
-22 = 2x
2x/2 = -22/2
x= -22/2
x= -11
Final answer: x = -11
To find the area of a triangle, the formula is
![\frac{1}{2} (b)(h)](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20%28b%29%28h%29)
=A
Since you have the area and the base you can replace the variables and place the numbers into its place.
17.5 =
![\frac{1}{2} (7)(h)](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20%287%29%28h%29)
From here you need to solve for h by first multiplying the (1/2) and 7 which would equal 7/2 or 3.5
Then you would have
17.5 = 3.5(h)
Now you divide both sides by 3.5 which would make h equal to
h=5
Double check and do
![\frac{1}{2} (7)(5)](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20%287%29%285%29)
which would equal to
![\frac{1}{2} (35)](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20%2835%29)
All of that equals to 17.5, which is the correct answer so the height is 5m.
Answer:
67 degrees
Step-by-step explanation:
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