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3 years ago

6

For similar light intensity, compact fluorescent bulbs use about 25% of the energy of incandescent bulbs. Let's say you replaced

a bulb of 100 W with a fluorescent bulb and that your utility charges $0.15/kW-hour. How many dollars would you save in electricity in the 10,000−hour lifetime of the bulb?

1 answer:

Nikolay [14]3 years ago

6 0

Answer:

$112.50¢

Step-by-step explanation:

please kindly check the attached file for explanation

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Help ASAP!!! Problem is on the picture provided.

Olegator [25]

<u>QUESTION 1</u>

The volume of a cone is given by;

$V=\frac{\pi r^2h}{3}$

From the given information,

$r=12,h=6$

$V=\frac{12^2\times 6}{3}\pi$

$V=\frac{144 \times 6}{3}\pi$

$V=288\pi$

<u>QUESTION 2</u>

The volume of a sphere is given by

$V=\frac{4\pi r^3}{3}$

From the given information.\

$r=\frac{Diameter}{2}= \frac{12}{2}=6$

Therefore the volume of the sphere is

$V=\frac{4\times6^3}{3} \pi$

$V=\frac{4\times216}{3} \pi$

$V=288\pi$

<u>QUESTION 3</u>

The volume of a sphere is given by

$V=\frac{4\pi r^3}{3}$

From the given information.\

$r=9$

Therefore the volume of the sphere is

$V=\frac{4\times 9^3}{3} \pi$

$V=\frac{4\times 729}{3} \pi$

$V=972\pi$

<u>QUESTION 4</u>

The volume of a cylinder is given by

$V=\pi r^2 h$

From the given information,

$r=\frac{Diameter}{2}= \frac{12}{2}=6$

and

$h=27$

Therefore volume of the cylinder

$V=6^2 \times 27 \pi$

$V=36 \times 27 \pi$

$V=972\pi$

<u>QUESTION 5</u>

The volume of a cylinder is given by

$V=\pi r^2 h$

From the given information,

$r=\frac{Diameter}{2}= \frac{8}{2}=4$

and

$h=18$

Therefore volume of the cylinder

$V=4^2 \times 18 \pi$

$V=16 \times 18 \pi$

$V=288\pi$

<u>QUESTION 6</u>

The volume of a cone is given by;

$V=\frac{\pi r^2h}{3}$

From the given information,

$r=\frac{18}{2}=9,h=36$

$V=\frac{9^2\times 36}{3}\pi$

$V=\frac{81 \times 36}{3}\pi$

$V=972\pi$

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What is the slope of the line with equation y=-5x

harina [27]

An equation in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

In this case, our y-intercept is 0, so we're left with y = -5x.

-5 is in the place of m, which means -5 is our slope.

The slope of y = -5x is -5.

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Ronch [10]

Answer:

1,2,4,8,16

Step-by-step explanation:

prime factorization: 2x2x2x2 =16

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One solution is the answer

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