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Phoenix [80]
3 years ago
8

Armando read 20 pages of his 200-page book in 4 hours. At this rate, how long will it take him to read the entire book?

Mathematics
1 answer:
Jet001 [13]3 years ago
6 0
What you would need to do is find out how many pages can he read in 1 hour. If he can read 20 pages in 4 hours, then that means he can read 5 pages in 1 hour. So, what you need to do is divide 5 by 200, and you'll get 40. Armando will finish the whole book in 40 hours.
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Answer:

x = 7 , y = 7\sqrt{2}

Step-by-step explanation:

A 45- 45- 90 triangle is an isosceles right triangle with the 2 legs being congruent , that is

x = 7

Using Pythagoras' identity in the right triangle, then

y² = 7² + 7² = 49 + 49 = 98 ( take square root of both sides )

y = \sqrt{98} = \sqrt{49(2)} = \sqrt{49} × \sqrt{2} = 7\sqrt{2}

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Step-by-step explanation:

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3 years ago
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a)

his income must be "x" which is the 100%, and we would know that 0.2% of that is 12.37.

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b)

his income must be "x" which is the 100%, and we would know that 2% of that is 12.37.

\begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 12.37&2 \end{array}\implies \cfrac{x}{12.37}=\cfrac{100}{2}\implies 2x=1237 \\\\\\ x=\cfrac{1237}{2}\implies x=618.5

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Round 10.054 To 2 decimal places
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