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Zepler [3.9K]
2 years ago
9

Solve x2 - 8x = 20 by completing the square {-22, 14} {-14, 22} {-10.2) -(2.10)

Mathematics
1 answer:
alexgriva [62]2 years ago
6 0
-10,2 is your answer when you simplify it
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Solve this equation -3x-13=-103
ioda
X=-30
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What is the length of CD? What is the length of C’D’? What is the measure of B? What is the measure of B’? What is the scale fac
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Answer:

What is the length of CD? (6 units)

What is the length of C’D’?(4 units)

What is the measure of B? (90 degrees)

What is the measure of B’? (90 degrees)

What is the scale factor for the reduction of rectangle ABCD to produce rectangle A’B’C’D’? (2/3)

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3 years ago
What is the area of a sector with a central angle of 2pi/9 radians and a diameter of 20.6mm? Use 3.14 for Ali and round your ans
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- The area of the circle is:

 A=πr²

 A is the area of the circle.
 π=3.14
 r is the radius of the circle.

 - To calculate the area of <span> the sector indicated in the problem, you must apply the following formula:

 As=(</span>θ/2π)πr²

 As is the area of the sector.
 θ is the central angle (θ=2π/9)
 π=3.14
 r is the radius.

 - First, you must find the radius:

 r=Diameter/2
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 - Now, you can substitute the values into the formula As=(θ/2π)πr². Then, you have:

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 - Finally, the area of the sector is:

 As= 37.01 mm²
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3 years ago
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