![makennahudson94](/avatars/17687.jpg)
makennahudson94
25.04.2020 •
Mathematics
Family of four lives in a three-bedroom house and uses an average of 900 kWh of electricity per month. The family cools their house for three months during the summer with two window-unit air conditioners that each use 350 kWh of electricity per month. Which of the following is the percentage of the family’s total annual electricity that is used to run the two air conditioners for the three summer months?
Group of answer choices
9,7%
19.4%
38.8%
77.8%
Solved
Show answers
More tips
- L Leisure and Entertainment Mysteries of the Name Vyacheslav Dobrynin...
- F Food and Cooking Why Chicken Liver Pops and How It Can Affect Your Health?...
- F Food and Cooking Effective Methods to Organize Videos in your iPad According to Content...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
Answers on questions: Mathematics
- M Mathematics I need help with 32 and 32!!...
- M Mathematics 3/4 − 2/5 in a fraction...
- M Mathematics Peanut allergies are becoming increasingly common in Western countries. Some evidence points to the timing of peanuts first introduction in the diet as an influential factor,...
- H History How did the compromise of 1877 affect the political participation of african americans? a. southern legislatures, which were given power in the compromise, failed to persecute...
- M Mathematics 1. a. use this number line with a scale marked in twenty-fourths to representthe equation 2 + 2 = 32...
- M Mathematics Compute the following binomial probabilities directly from the formula for b(x; n, p). 1. b(5; 8, 0.35) 2. b(6; 8, 0.6)...
Ответ:
B) 19.4%
Step-by-step explanation:
It is given that average consumption of electricity by the family is 900 kWh per month. Since, there are 12 months in a year, and we have the average consumption of electricity per month, the total consumption for the year would be:
Total electricity consumed in a year = 900 x 12 = 10800 kWh
Next it is stated that during the summer, the same family uses 2 window-unit air conditioners and each of them uses 350 kWh of electricity per month. So, the total electricity used by both units per month would be:
Electricity used by 2 air conditioners in 1 month = 2 x 350 = 750 kWh
Since, the family uses these air conditioners for 3 month, the total consumption for 3 months would be:
Total electricity consumption for 3 months of 2 air conditioners = 3 x 750 = 2250 kWh.
We have to find what percentage of total annual electricity is used to run the 2 air conditioners for three months of summer. So, we have to find 2250 is what percent of 10800. This can be done as:
This means, 2 air conditioners consume 19.4% of the annual electricity.
Ответ:
19.4%
Step-by-step explanation:
Electricity consumption for two air conditioners during summer is 2×350=700 kWh
Consumption of electricity by air conditioners during summer which takes 3 months will be 3*700=2100 kWh
Annual electrical consumption is 900*12=10800 kWh
Percentage of electricity consumed on air conditioners to total annual consumption will be
(2100/10800)×100=19.444444444444444444%
Rounded off, this is 19.4%
Ответ:
Gallons of gasoline = $264.60 / $0.12
Hence, there were 2,205 gallons of gasoline sold.
owner paid a total of $264.60 for gasoline taxes. If the tax for each gallon