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Yuri [45]
3 years ago
8

A laptop computer consumes about 20 watts of electricity per hour when operating. At 10 cents per kilowatt-hour, how much does a

laptop cost to operate for 5 hours?
Mathematics
1 answer:
Margarita [4]3 years ago
7 0

Answer:

$0.01

Step-by-step explanation:

1 kilowatt = 1000 watts

5hrs it uses 100 watts

100 watts = 0.1 kilowatts

0.1 × $0.10 = $0.01

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Mean, range, mode, median

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Which line on the graph represents the equation y=3x-2
Vika [28.1K]

Answer:

Line A.

Step-by-step explanation:

When you put x as zero into 3x-2, you get 3(0)-2. That equals -2. Therefore, y = -2. When x=0, that is the y-intercept, so the y-intercept is -2. Line A crosses the y-axis at -2, so line A has that y-intercept.

Slope is always y/x. On a graph, that is the number of squares UP over the number of squares ACROSS. Counting, we get, 3 squares up over 1 square across for line A. 3/1= 3. The slope is the number we multiply by x. In the equation, that is 3, because we see 3x, and no sign or space between 2 numbers automatically means we multiply. So line A also has the correct slope.

In linear equations (straight lines), the same slope and y-intercept are enough to tell you that the equation matches the line.

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5 0
3 years ago
Myrna is driving at a constant rate in her car if she travels 135 miles in 3 hours how far would you travel in 8 hours
Romashka-Z-Leto [24]
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3 0
3 years ago
MATHEMATICAL READINESS
adoni [48]

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80%

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So,  if x movies are thought to be very good out of a total of y movies,

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So if a total of 100 movies watched, 80 of them are thought to be very good.

Thus the required answer is 80%.

5 0
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