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mezya [45]
4 years ago
10

Can someone please help me with my homework please.p

Mathematics
1 answer:
umka2103 [35]4 years ago
4 0

Answer:

8-20c

Step-by-step explanation:

Just plug 4c into the function

8-5x

8-5(4c)

8-20c

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The width of a rectangle is 1 unit less than the length. The area of the rectangle is 72 units. What is the width, in units, of
denis-greek [22]

Answer:

Length=9 units\\width=8 units

Step-by-step explanation:

Width of the rectangle= W

Length= L

W=(L-1) units

Area= 72 square units

Area of a rectangle= Length*Width

72=L*(L-1)\\\\72=L^2-L\\\\L^2-L-72=0

Solving the quadratic equation using the factorization method:

L^2+8L-9L-72=0

Taking common from the equation:

L(L+8)-9(L+8)=0\\(L+8)(L-9)=0

L+8=0\\L=-8

OR

L-9=0\\L=9

The length cannot be negative, therefore: Length= 9 units

Width=Length-1\\=9-1\\=8 units

Length=9 units\\width=8 units

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= 1200/5
= 240 acres affected by fire

Hope this helps! :)
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3 years ago
True of false a circle could be circumscribed about the quadrilateral below?
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Answer: True

The reason why this is true is because the opposite angles add up to 180 degrees
120+60 = 180
90+90 = 180
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