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Vetinthemaking21
18.03.2021 •
Mathematics
What is the image of (-8,-7) after a dilation by a scale factor of 2 centered at the origin?
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Ответ:
The image is (-16,-14)
Step-by-step explanation:
Given
Represent the point with A
Required
Determine the image (A')
The image is calculated as:
So, we have:
Hence, the image is (-16,-14)
Ответ:
The measure of the angle m<LKM is 156degrees
The point where two lines meet is called angle.
From the diagram shown:
m<LKN + m<NKM = m<LKM and:
m<LKN = m<NKM
Hence m<NKM + m<NKM = m<LKM
2m<NKM = m<LKM
2(3x+9) = 7x-5
6x+18 = 7x - 5
6x-7x = -5-18
-x = -23
x = 23
Get the angle m<LKM
m<LKM = 2m<NKM
m<LKM = 2 (3x+9)
m<LKM = 6x+18
m<LKM = 6(23) + 18
m<LKM = 138+18
m<LKM = 156degrees
Hence the measure of m<LKM is 156 degrees
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