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lara [203]
4 years ago
8

Please help !!!!!!!!!!!!

Mathematics
1 answer:
Levart [38]4 years ago
3 0

Answer:

a=-2

Step-by-step explanation:

If a line segment has one endpoint on the line y=x, then its coordinates are (b,b). The first endpoint of the segment is at point (a,0). We can find the coordinates of the midpoint of this segment as the average value:

x_{\text{midpoint}}=\dfrac{x_{\text{first endpoint}}+x_{\text{second endpoint}}}{2},\\ \\y_{\text{midpoint}}=\dfrac{y_{\text{first endpoint}}+y_{\text{second endpoint}}}{2}.

Thus,

2019=\dfrac{a+b}{2},\\ \\2020=\dfrac{0+b}{2}.

From the second equation

b=2\cdot 2020=4040.

Substitute it into the first equation:

a+4040=2\cdot 2019,\\ \\a=4038-4040=-2.

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Answer:

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tatyana61 [14]

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irinina [24]

Option B:

The solution to the given inequality is x ≤ 8.

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Step 1: Given expression is the inequality.

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