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16.10.2020 •
Mathematics
The price of a sweater was reduced from $20 to $12, By what percentage was the price of the sweater reduced?
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Ответ:
40%
Step-by-step explanation:
12 ÷ 20 = .6
You can convert the .6 to a percentage by multiplying it:
.6 x 100 = 60%
If 12 is 60% of 20, then that means 40% was taken away.
Ответ:
The correct answers are:
a ) Every line bisects a vertex angle.
c) Every line is perpendicular to a side.
d ) Every line bisects a side .
Explanation:
The lines of symmetry are the lines through which we can "fold" the figure in half. In order to for it to be exactly in half in a pentagon, each of these lines will need to go from a vertex to the opposite side.
Since it divides the figure into halves, this means it bisects the vertex angle as well as the opposite side.
In order for it to bisect both of these, the line must be perpendicular to the opposite side.