Answer:
A. 190 lb
Step-by-step explanation:
Hope this helps
Answer:

Step-by-step explanation:
![\displaystyle -9[5] + 3[7] + 4 = -45 + 21 + 4 = -20](https://tex.z-dn.net/?f=%5Cdisplaystyle%20-9%5B5%5D%20%2B%203%5B7%5D%20%2B%204%20%3D%20-45%20%2B%2021%20%2B%204%20%3D%20-20)
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Sum of all exterior angles = 360°
Size of one exterior angle = 40°
Number of sides = 360 ÷ 40 = 9
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Answer: There are 9 sides to this polygon.
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Answer:
To solve this we need to form 2 equations with only 2 variables.
x+4y-5z=-7
2x+y+5z=8
3x+5y=1
15x+10y+15z=35
6x+3y+15z=24
9x+7y=11
Now we need to use these to find x and y
9x+15y=3
9x+7y=11
8y=-8
y=-1
Therefore:
x=2
From this we can find that:
2(2)-1+5z=8
Therefore z=1
The answer is x=2, y=-1, z=1
If you want the area of the entire trapeziod.
The formula for area of a trapeziod is:
1/2h(b₁+b₂)
So the equation applied to the trapeziod is:
2.5(20+12)
20+12 is 32. 32 multiplied by 2.5 is 80.
<h3><u><em>
Your answer is 80.</em></u></h3>