3 years ago

Question 1 Unsaved

Mathematics

1 answer:

Andrew [12]3 years ago

8 0

The average of the given base lengths is the length of the midsegment:

... (72 + 104)/2 = 176/2 = 88

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Is (-1,2) a solution of y=-5x+7

Arlecino [84]

No, it is not. I will show you:

-1 = x and 2 = y

2 = -5(-1) + 7

2 is not equal to 12. I hope this is right!

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3 years ago

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V125BC [204]

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2 years ago

M(5, 7) is the mid-point of the l.ine segment joining A (3,4) to B. Find the coordinates of B.

Nina [5.8K]

Answer:

B(7,10)

Step-by-step explanation:

$M(5,7)=(x ,y)\\A(3,4)=(x_1,y_1)\\B(x_2,y_2)\\\\Endpoint ;\\x = \frac{x_1+x_2}{2}\\ \\5 = \frac{3+x_2}{2}\\ Cross\:Multiply\\5\times 2 =3+x_2\\10=3+x_2\\10-3 =x_2\\7=x_2\\\\\\y = \frac{y_1+y_2}{2} \\\\7 = \frac{4+y_2}{2}\\ Cross\:Multiply\\7\times 2 =4+y_2\\14 =4+y_2\\14-4 =y_2\\10 =y_2\\\\\\B(7,10)$