A 120 watt light bulb uses about 0.1 kilowatt of electricity per hour.if electricity costs $0.20 per kilowatt hour how much does it cost to have a bulb on for an hour?

Answers

Answer 1

Answer: A 120 watt light bulb uses about 0.1 kilowatt of electricity per hour.if electricity costs $0.20 per kilowatt hour. Let's solve how much does it cost to have a bulb on for an hour. => 120 watt = 0.1 kilowatt per hour which costs 0.20 per kilowatt per => 0.1 kilowatt per hour * 0.20 = 0.02 dollars in an hour.

Answer 2

Answer:

Answer:

$0.02 is the cost to have the bulb on for an hour

Step-by-step explanation:

A 120 watt light bulb uses about 0.1 kilowatt of electricity per hour

We can assume 1 kilowatt per hour = 1 unit

So total units of electricity consumed in 1 hour = 0.1 × 1

= 0.1 kilowatt hour or 0.1 unit

Since cost of one unit or 1 kilowatt hour is = $0.20 per unit or kilowatt hour.

Therefore, total cost to have this bulb on for an hour = Number of units consumed by the light bulb × per unit cost

= 0.1×0.20

= $0.02

$0.02 is the cost to have the bulb on for an hour.

Related Questions

west palm beach, florida, gets rain about 16 percent of the time. on how many days out of 400 can residents of west palm beach predict they will get rain?
3 ( 4d + 1 ) - 9d = 6 - 2d
The area of a square deck is 81 square feet. How long is each side
Which polynomial has (3x + 2) as a binomial factor? 6x3 + 3x2 + 4x + 2 12x2 + 15x + 8x + 10 18x3 – 12x2 + 9x – 6 21x4 + 7x3 + 6x + 2
What is the answer to 3 4/6 - 1 5/6

Srry i suck at math its very hard for me

Answers

That is the same thing
1*2*3
Do 8-5 to get 3 then,
do 1*2*3=6

If you had 4! you would do,
1*2*3*4=24

The answer of this wuestion would be 6

Please helpppppppp meee

Answers

Answer: 192 cm^2

Step-by-step explanation:

With parallelograms like this, you an just multiply the width and length to find the area. If you cut the shape up in a certain way, it would make a rectangle, so the formula length*width=area would also apply to parallelograms.

What is the greatest perimeter of a rectangle with an area of 39 square feet?

Answers

39 = xy

Perimeter = 2x + 2y

The greatest perimeter could be 80 feet

P = 2(1) + 2(39)

Which of the ordered pairs in the form (x, y) is a solution of this equation?Three x minus begin fraction y over four end fraction equals eleven
(3, –8), (4, 4)

A.
The first is not a solution, but the second is.

B.
Both are solutions.

C.
The first is a solution, but the second is not.

D.
Neither is a solution.

Answers

b.

if you plug in the points you get for the first one
3(3) - (4/(-8)) = 9+2 = 11
and the second
3(4) - (4/4) = 12-1 = 11

Your round-trip drive to work is 4 3/10 miles. How many miles do you drive to and from work in 3 days?

Answers

12.9 would be the correct answer.

$37 dinner; 15% tip whats the total cost

Answers

37*.15=5.55
37+5.55=42.55

Other Questions

3 +0.5(4a + 8) = 9 – 2a

Mr. Diaz's class is taking a field trip to the science museum. There are 23 students in the class, and a student admission ticket is $8. How much will the students ticket cost?

72 is 40% of what number?

PQRS is an isosceles trapezoid and m