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2 years ago

15

If 18.9 million computers were in use in 1980 and the number is rising by 19% annually, predict the number of computers in use i

n 2015. Round to the nearest whole number

1 answer:

4vir4ik [10]2 years ago

4 0

18.9(1+0.19)^35, 35 is the number of years
use your calculator, you should get 661.5, round to the newest whole number 662million

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Scilla [17]

Answer:

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Step-by-step explanation:

Area of a circle with radius $r$ : $r^2\pi$

Circumference of a sector with radius $r$ : $2r\pi$

Area of sector with angle $\theta$ : $r^2\pi\cdot \frac{\theta}{360}$ .

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Using these equations, we get the following information:

Area of circle: $27^2\pi=729\pi$

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2 years ago

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Step-by-step explanation:

a square has 4 sides and an equilateral triangle has 3 sides

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2 years ago

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Helen bought notebooks and pencils for school. The number of pencils she bought is given by 6(n-3) , where n is the number of no

pychu [463]

So the number of pencils bought can be represented by an equation: $P=6(n-3)$ , where n is the number of notebooks bought. Since Helen bought 5 notebooks, simply plug 5 into n: $P=6(5-3)=6(2)=12$ . So Helen bought 12 pencils.

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3 years ago

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Answer:

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Step-by-step explanation:

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1 year ago