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Schach [20]
3 years ago
10

a line segment has (x1,y1) as one endpoint and (xm,ym) as its midpoint. Find the other endpoint (x2,y2)of the line segment in te

rms of x1,y1,xm, and ym.
Mathematics
2 answers:
svlad2 [7]3 years ago
7 0

(x1,y1)

(x2,y2)

(xm,ym)

Midpoint formula is given as below.

((x1 + x2)/2 , (y1 + y2)/2 )

Where

(x1 + x2)/2 = xm ----------- (1)

(y1 + y2)/2 = ym ----------- (2)

Equation (1) implies that;

x1 + x2 = 2xm

x2 = 2xm – x1

Equation (2) implies that;

y1 + y2 = 2ym

y2 = 2ym – y1

Thus the end point is

<span>(x2,y2) = (2xm – x1, 2ym – y1)</span>

Neko [114]3 years ago
7 0
<span>A line segment has (x1, y1)as one endpoint and (xm, ym)as its midpoint.

Use the formula? (x2, y2) = (2xm − x1, 2ym − y1) to find the coordinates of the endpoint of a line segment if the coordinates of the other endpoint and midpoint are (1, 8), (−3, −1) and (−7, 16), (3, 6),respectively.
 
(a) Endpoint: (1, 8), (−3, −1) (x2, y2) = ( , )
(b) Midpoint: (−7, 16), (3, 6) (x2, y2) = ( , )
           

ANSWER a) (x2,y2) = (2x-x1, 2y-y1) for midpoints m = 1 = {(2(-3)-1), (2(-1)-8)} = (-7,-10)

Answer  b) (x2,y2) = (2x-x1, 2y-y1) for midpoints m = 1 = {(2(3)+7), (2(6)+16)} = (13,28)</span>
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The number of bacteria in the dish after 9.9 minutes is 478

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∵ f(9.9)=0.5(2)^{9.9}

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∴ f(9.9) = 478

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