1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vovangra [49]
2 years ago
15

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?
Mathematics
2 answers:
Ksivusya [100]2 years ago
8 0
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.
Fittoniya [83]2 years ago
4 0

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.

You might be interested in
8. Community Hospital, aa 120 bed facility reported that in March there were 545 discharges. Using the direct formula, what was
Anna007 [38]

Answer:

Therefore, the bed turnover rate for March was 4.5416.

Step-by-step explanation:

We know that community hospital a 120 bed facility reported that in March there were 545 discharges. We calculate what was the bed turnover rate for March.

The Direct Variation Formula is y=kx.

We know that y=545 discharges and x=120 bed.

Therefore, we get:

y=k\cdot x\\\\545=k\cdot 120\\\\k=\frac{545}{120}\\\\k=4.5416

Therefore, the bed turnover rate for March was 4.5416.

8 0
3 years ago
Arrange 2/3, 3/5, 5/7 in order from least to greatest?
AveGali [126]
3/5
2/3
5/7
top is least bottom is greatest
3 0
3 years ago
Read 2 more answers
I need help on questions 9 and 10. The answers can either be -36, 20, 70 or 28
horrorfan [7]
It should be 28 not because im just saying it it is because i have done the exact same thing ask every question you can ask i can help
5 0
3 years ago
Seven million as a numeral
schepotkina [342]
If you mean in Roman numerals,it would be ___.VII. or it could be ((DCC))
5 0
2 years ago
Evaluate (solve) the power: 2^9
german

Answer:

The corrext answer is, 512.

3 0
2 years ago
Read 2 more answers
Other questions:
  • HELPPPPP??? ANY ONE???
    11·2 answers
  • Find the geometric mean of 125 and 5..
    11·2 answers
  • in a total of $580,800 last year. If they served an average of 200 customers each day over the 363 days that the deli was open,
    6·2 answers
  • Ramos went to a pizza shop and spent half of his money on lunch. If Ramos had $4.50 left after lunch,how much money did he have
    8·2 answers
  • Write a real word problem that involves dividing a decimal by a whole number
    10·1 answer
  • The function f is defined by f(x) = 4x + 1. What is the value of f(3)?
    9·2 answers
  • Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.
    9·1 answer
  • PLEASE ANSWERR ILL OFFER BRAINILIEST
    7·1 answer
  • Answer my last question for all my points .
    5·1 answer
  • What is the size of angle a?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!