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HUNIXX6561
11.07.2019 •
Mathematics
How can i get the area of the shaded region?
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Ответ:
Let's work on the triangle first. The x intercept of 2y=27-3x is
0 = 27 - 3x
3x = 27
x = 9
So A(9,0)
B is the meet of 2y=27-3x and y=3x
2y=27-y
3y=27
y=9
y is the height of OAB; we don't really need x
Area(OAB) =![\frac 1 2 (9)(9) = \frac{81}{2} = 40.5](/tpl/images/0078/7799/a4401.png)
Now we have to subtract
Area = 40.5 - 24.3 = 16.2
16.2
Ответ:
each can hold 2 1/2 oz
how many cups can he fill
37 1/2=75/2
2 1/2=5/2
x=number of cups
x times 5/2=75/2
5/2x=75/2
multiply both sides by 2
5x=75
divide both sides by 5
x=15
he can fill 15 cups