![mariarichards2p8a277](/avatars/2228.jpg)
mariarichards2p8a277
05.05.2020 •
Mathematics
Type the correct answer in the box. Use numerals instead of words,
A lawn mower manufacturer incurs a total of 52A816 in overhead costs and 5388 per lawn mower in production costs. How many lawn mowers
were manufactured if the average cost of production is 5660?
The number of lawn mowers manufactured was
Solved
Show answers
More tips
- H Health and Medicine How to Whiten Teeth and Get the Perfect Smile...
- F Food and Cooking How to Make Thin Pancakes: Recipe and Tips...
- S Style and Beauty Is Hot Scissor Haircutting Beneficial or Dangerous?...
- S Style and Beauty How to Get Rid of Under Eye Bruises?...
- F Food and Cooking Is Bacon Good for You?...
- S Style and Beauty Discover the Art of Nail Design: How Do You Paint Your Nails?...
- P Philosophy How to Develop Extrasensory Abilities?...
- O Other Everything You Need to Know About Kudyabliks...
- C Computers and Internet The Twitter Phenomenon: What it is and How to Use it...
- C Computers and Internet How to Choose a Laptop: Expert Guide and Tips...
Answers on questions: Mathematics
- M Mathematics Which of the following terms correctly describes the object below?...
- M Mathematics 16. Find the volume of the sphere. 1-6ft 450 Ft 2883 216 900x 225 ft...
- M Mathematics Pretty lost not too sure what to do...
- M Mathematics What is number 29 step by step?...
- M Mathematics A triangle with an area of 8 in^2 is dilated by a factor of 3. The area of the dilated triangle is in^2....
- M Mathematics Approximately how tall is the streetlight? Round your answer to the nearest tenth....
- M Mathematics How do animals breakedown rocks. a. animals step on rocks b. use their hooves and horns c. acid from dead animals weaken rocksd. shaping of land forms...
- M Mathematics If using the method of completing the square to solve the quadratic equation x2 - 19x + 35 = 0, which number would have to be added to complete the square ?...
- M Mathematics An airplane leaves New York City and heads toward Los Angeles. As it climbs, the plane gradually increases its speed until it reaches cruising altitude, at which time...
- M Mathematics Use the spinner to calculate the fraction of each letter or group. 1. what is the fraction for C 2. what is the fraction for the vowels....
Ответ:
#1Without the roof panels, the surface area (except for the open panel) is 176.25 sq. ft.
With the roof panels, the surface area (except for the open panel) is 196.67 sq. ft.
The area of the rectangular sections (the sides without gables) is given by 10*6 = 60 sq. ft. There are two of these sides, for a total of 2*60 = 120 sq. ft.
The gables are triangles, which have an area formula of
A = 1/2bh
For the gables, this is 1/2(1.5)(7.5) = 5.625 sq. ft. Since there are two of them, this makes 2*5.625 = 11.25 sq. ft.
The closed side under a gable has an area of 6*7.5 = 45 sq. ft.
The two roof panels have an area of (4 1/12)(2 1/2) each:
49/12(5/2) = 245/24
There are two of them, which makes 490/24 = 20.42 sq. ft.
Without the roof panels, we have 45+11.25+120 = 176.25 sq. ft.
With the roof panels, we have 45+11.25+120+20.42 = 196.67 sq. ft.
#2 Solar cells can transform solar energy into electric energy. In a sunny day, the average power the sun incides on earth is approximately 1,000 watts (heat). if we had a 100% efficient solar cell, it would mean that the total amount of sunlight energy would be transformed into electrical energy, i.e. 1,000 watts of power. Its efficiency could be 1000 watts(solar cells)/1000(sunlight)x100(to express it in percentage).
Since the solar cells that will be mounted in the roof will produce 41 watts per square meter, its efficiency is calculated by dividing 41 /1,000x100. This gives us an efficiency of 4.1%. In order to generate 1,000 watts of power, we will need to use a simple rule-of-three, described like the following:
if 41 watts are produced by the solar cells in 1 square meter, how many square meters will be needed to produce 1,000 watts?
i.e. 41 watts 1 sq meter
1,000 watts x
Finally, we can assume that the solar cell system will produce this amount of energy constantly during a full day cycle (using solar cells at day and batteries at night).