Mathematics
16.03.2022 14:03
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Camille is sixty-six inches tall. this is twenty inches less than two times mindy

Camille is sixty-six inches tall. this is twenty inches less than two times mindy's height. how tall is mindy ?
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miaaa0
miaaa0
4,4(68 marks)
23 inches 

x = Mindy's height 
2x - 20 = 66 
- 20        -20
2x        = 46
/2             /2
x          = 23
kleighlamb4850
kleighlamb4850
4,4(5 marks)

(-\frac{36}{7},\frac{40}{7})

Step-by-step explanation:

Coordinates of points A and C are (-8, 6) and (2, 5).

If a point B intersects the segment AB in the ratio of 2 : 5

Then coordinates of the point B will be,

x = \frac{mx_2+nx_1}{m+n}

and y = \frac{my_2+ny_1}{m+n}

where (x_1, y_1) and (x_2,y_2) are the coordinates of the extreme end of the segment and a point divides the segment in the ratio of m : n.

For the coordinates of point B,

x = \frac{2\times 2+(-8)\times 5}{2+5}

  = -\frac{36}{7}

y = \frac{2\times 5+5\times 6}{2+5}

  = \frac{40}{7}

Therefore, coordinates of pint B will be,

(-\frac{36}{7},\frac{40}{7})

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