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JulsSmile [24]
3 years ago
13

a girl scout has (5x-12) boxes of cookies and sells (3x+18) of them. Write a simplified expression to represent the number of bo

xes left.
Mathematics
1 answer:
SOVA2 [1]3 years ago
8 0

5x-12 -(3x+18)

distribute

5x-12 -3x-18

2x-30  is whats left

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If E F = 7 , A C = 16 , and A F = 9
Vilka [71]

Answers:

CB = 14

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EF is parallel to CB

====================================

Explanations:

Points E and F are midpoints of their respective sides. They form the midsegment EF. Because EF is a midsegment, A midsegment is half the length of its parallel counterpart, so CB is two times longer than EF. If EF is 7 units long, then CB = 2*EF = 2*7 = 14

For similar reasons, GF is parallel to AC. If AC = 16, then half of that is GF = (1/2)*AC = 0.5*16 = 8.

FB = FA = 9 as these segments have the same single tickmark to indicate they are the same length

EF is parallel to CB because EF is a midsegment, and this is one of the properties of being a midsegment. We can show that quadrilateral EGBF is a parallelogram to help prove this.

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