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mrmendrala
24.09.2019 •
Mathematics
Suppose you are using a photocopier to reduce the size of a picture that is 8 inches wide and 11 inches long. if you reduce the picture to 7 inches wide, how long will it be?
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Ответ:
(old length)/(old width)=(new length)/(old length)
This is because since the figures are similar, they have a constant factor that was used to dilate the pre-image into new image.
old length=11 inches
old width=8 inches
New length=x inches
new width= 7 inches;
Thus the new length will be:
11/8=x/7
multiplying both sides by 7/1 we get:
7/1*11/8=x/7*7/1
x=9 5/8
Ответ:
The correct answer is third function 2x if x<0 anf 4 if X≥0
The function 2x worth for domain x<0 ( or has domain x<0)
The function 4 is linear graph parallel with x axis and worth for domain x≥0
Good luck!!!