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3 years ago

14

It took Sergio 1.5 hours to read 3 chapters of a book. If he continues reading at a constant rate and the chapters are similar i

n length, how many hours will it take Sergio to complete the entire book if it is 18 chapters long?

1 answer:

ryzh [129]3 years ago

8 0

Answer:

9 hours

Step-by-step explanation:

1 chapter ≈ .5 hour

18 x .5 = 9

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Answer:

C. $B(x,y) = \left(3,-\frac{16}{3} \right)$

Step-by-step explanation:

Let $A(x,y) = (6,-7)$ , $B(x,y) = (x,y)$ and $C(x,y) = (-3,-2)$ . From statement we know that $AB = \frac{1}{2}\cdot BC$ , which is equivalent to the following linear algebraic formula:

$B(x,y) -A(x,y) = \frac{1}{2}\cdot [C(x,y)-B(x,y)]$ (1)

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$\frac{3}{2}\cdot B(x,y) = \frac{1}{2}\cdot C(x,y)+A(x,y)$

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Then, the coordinates of point B on AC are:

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