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Shkiper50 [21]
3 years ago
14

The midpoint of AB is M (1,3) . If the coordinates of A are (4,1) , what are the coordinates of B

Mathematics
1 answer:
KIM [24]3 years ago
5 0

Answer:

B(-2,5)

Step-by-step explanation:

Let B (x,y)

M = ([Xa+Xb]/2 , [Ya+Yb]/2)

(x+4)/2 = 1

x+4 = 2

x = 2-4

x = -2

(y+1)/2 = 3

y + 1 = 6

y = 6-1

y = 5

B (-2,5)

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Answer:

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Step-by-step explanation:

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Multiplying by 12 gives ...

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  2x = 18 -3x . . . . . eliminate parentheses

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_____

<em>Alternate solution</em>

I like to try to work these mentally. The total of side lengths is 10, so the total base length (6) is 6/10 = 0.6 times that. Then x will be 0.6 times the left side length: 0.6·6 = 3.6 = x.

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KengaRu [80]
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Answer:

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