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
Jlenok [28]
3 years ago
5

Plz help with the math worth 21 points

Mathematics
1 answer:
irinina [24]3 years ago
7 0

Answer:

As there is one math problem over there.

Lets see the question first:

It says that "A hair dryer is rated 1200\ W,if you use the dryer for 0.25\ h.How much electric energy do you use ?"

Final answer = Electic energy =0.3\ kW\ h

Step-by-step explanation:

Electrical Energy E=Power \times time.

The total amount of electrical energy used depends on the total power used by the electrical device and the total time they are used for.

So we have been given the power of the hair dryer =1200\ W =\frac{1200}{1000}=1.2\ kW

Now the time it has been use for =0.25\ hrs

To calculate electric energy we will multiply both the terms.

Electric energy =0.12 \times 0.25 =0.3\ kW\ h

So electric energy used for the hairdryer is =0.3\ kW\ h

You might be interested in
5/6 b + 5 - 2/3 b -2
Oksana_A [137]

Answer:

1/6 b+3

Step-by-step explanation:

6 0
3 years ago
Please help asap for a test
son4ous [18]

Answer: y=4x−1

good luck

8 0
3 years ago
Read 2 more answers
Simplify.<br><br> 3(y+7)+8y<br><br><br> Please answere
Katena32 [7]
3y+21+8y
11y+21 is the answer
7 0
2 years ago
Read 2 more answers
Ten is 5% of what number?<br><br><br> 50<br><br> 5<br><br> 200<br><br> 500
Agata [3.3K]
The answer is C 200

Because 10 / 200 = 0.05 * 100 = 5%

I hope this helps :)
6 0
3 years ago
Read 2 more answers
What number is 150 more than the product of 5 and<br> 4892
Serjik [45]
The number that is 150 more than the product of 5 and 4892 is 24700
7 0
3 years ago
Other questions:
  • When constructing perpendicular lines with a compass and straightedge, how should you start the construction?
    6·1 answer
  • Find the mean median and mode of 15, 13, 9, 9, 7, 1, 11, 10, 13, 1, 13
    15·2 answers
  • Molly is designing a dog house for her puppy that has a rectangular base. The length of the base is 7 inches more than its width
    7·1 answer
  • How much more would you earn in the first investment than in the second investment? $22,000 invested for 40 years at 14% compoun
    11·1 answer
  • Evaluate the expression (x - y)^2 – x when x=3 and y=8<br><br> HELP PLEASE‼️‼️
    11·2 answers
  • Find the perimeter of the figure shown above. a. 20 in c. 30 in b. 24 in d. 18 in Please select the best answer from the choices
    6·1 answer
  • I really need help with this is due on Friday pls help with steps!
    15·1 answer
  • If these two shapes are similar, what is the measure of the missing length n?
    13·1 answer
  • Factor 42x+28y using the GCF
    8·1 answer
  • Mr Tong had some money. After giving $1300 to each 5 of his children, he had $450 left. How much money did he have at first
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!