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2 years ago

If 2/3 of a number is 10, then what is 0.15 times of that number?

Mathematics

2 answers:

maksim [4K]2 years ago

7 0

Answer:

d) 2.25

Step-by-step explanation:

Let the number is x.

2/3 of a number is 10:

2/3x = 10
x = 3*10/2 = 15

0.15 times of the number is:

15*0.15 = 2.25

Correct choice is d

swat322 years ago

3 0

10 divided by 2 is 5. 5 multiplied by 3 is 15. 15 multiplied by 0.15 is 2.25. So the answer is d) 2.25

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The coordinates of point X that divides the line in 1:4 are: (3,8/5)

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When a point divides a line with coordinates (x1,y1) and (x2,y2) in ratio m:n,

the coordinates of point are given by:

$(x,y) = (\frac{mx_2+nx_1}{m+n} , \frac{my_2+ny_1}{m+n})$

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$X(x,y) = (\frac{(1)(-5)+(4)(5)}{1+4} , \frac{(1)(4)+(4)(1)}{1+4})\\= (\frac{-5+20}{5}, \frac{4+4}{5})\\=(\frac{15}{5}, \frac{8}{5})\\=(3,\frac{8}{5})$

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