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pickupchik [31]
4 years ago
7

Factor the algebraic expression 27a+21

Mathematics
1 answer:
sasho [114]4 years ago
3 0
We know that we can do
ab+ac=a(b+c)
so find common factor

factor them
27a=a times 3 times 3 times 3
21=3 times 7
common factor=3
3=a
27a/3=9a
21/3=7

so now we have
(3)9a+(3)7=3(9a+7)
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Answer: Choice C) 41.13 square meters

---------------------------------------------------------------------------------------------

This figure is a composition of two quarter-circles and a square

Area of quarter circle = (1/4)*(area of circle)
Area of quarter circle = (1/4)*(pi*r^2)
Area of quarter circle = (1/4)*(pi*4^2)
Area of quarter circle = (1/4)*(pi*16)
Area of quarter circle = (1/4)*16*pi
Area of quarter circle = 4pi
There are two quarter circles, so the two circular areas add to 4pi+4pi = 8pi

Area of square = s*s = 4*4 = 16 square meters

Add the square area to the circular area: 8pi+16

Now use a calculator to find 8pi+16 = 41.1327412287183 which rounds to 41.13

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3 years ago
The circumference of a circle is 43.96 feet. What is the circle's radius?
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Answer:

r≈7ft

Step-by-step explanation:

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5 0
2 years ago
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What is the solution for the determinant?
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The value of the determinant of a 2x2 matrix is the product of the top-left and bottom-right terms minus the product of the top-right and bottom-left terms.

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4 0
3 years ago
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Answer:

5 pounds / Make sure to read the explanation so you know how to solve it

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First thing to do is:

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