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kykrilka [37]
3 years ago
15

A model house that runs completely on renewable energy uses 2 windmills and 3 solar panels each windmill generates M kilowatt ho

urs(kWh)of energy per year and each solar panel generates a kWh per year which expressions can we use to describe how many kWh of energy the model house will output in 10 years
Mathematics
2 answers:
kozerog [31]3 years ago
8 0

Answer:

y=(20M+30S) kwh

Step-by-step explanation:

Since each windmill generates M kwh then for ywo windmills, each year they will generate 2 M kilowatt hours

For solar panels, since each generates S kilowatts annually then for 3 of them, the power will be 3 S

Total production per year will be 2M+3S

In n years, the energy will be y(n)=(2M+3S)n

When n is 10 years then

y(10)=(2M+3S)10=20M+30S

Therefore, y=(20M+30S)kwh

Pepsi [2]3 years ago
4 0

Answer:

1.) 20M+30S

2.) 10(2M+3S)

Step-by-step explanation:

I got the question right on khan academy.

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Answer:

D

Step-by-step explanation

124 times 3 is 372

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3 years ago
Read 2 more answers
simons monthly take home pay is 2300. if he pays 21% of his gross pay in taxes, what is his gross pay
Mazyrski [523]

Grosspay = 2,300 + .21 * gross pay

.79 * Gross Pay = 2,300

Gross Pay = 2,911.39

********************************************

Double-Check 2,911.39 * .21 = 611.39

2,911.39 - 611.39 = 2,300.00

Correct !!!


7 0
4 years ago
9. (12 pts) daniel is paying $600 for his auto insurance, and he is wondering if he is overpaying compared to his friends. he se
Karolina [17]

Answer:

Step-by-step explanation:

1) The sample and the population of this study is the friends who replied his email which includes in his contact list. then, the number of the replied to his email are 9 friends.

population: the whole friends include in his contact list.

3) Type I error occurs when one incorrectly rejects the null hypothesis

Here there is possibility of type I error

7 0
4 years ago
Pasadena Candle Inc. projected sales of 58,000 candles for January. The estimated January 1 inventory is 2,900 units, and the de
saveliy_v [14]

The total units that will be produced by Pasadena Candle Inc. based on the projected sales given will be 49100 units

<h3>How to calculate the units?</h3>

Expected unit to be sold = 58000

Desired ending inventory = 6000

Total units available = 52000

Less: Estimated beginning inventory = 2900

Total units to be produced = 49100

In conclusion, the total units will be 49100.

Learn more about sales on:

brainly.com/question/25586322

4 0
2 years ago
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPP! Is 16x^2 - 56x + 49 a perfect square trinomial? How do you know? If it is, factor the expressio
jasenka [17]

No need to fear, thehotdogman93 is here!

The first step is to get rid of those very large numbers. It's going to be very difficult to factor unless we can bring those high numbers down. So lets see if we can factor each term.

So after dividing 49 with every single digit. The only number that divides evenly is 7 and one, and 16 isnt divisible evenly by 7 so that didn't work. Looks like we're gonna have to work with these big numbers.

There is something interesting though about these numbers. 16 and 49 are both perfect squares. 16 is the same as 4^2 and 49 is the same as 7^2. So we can factor the whole trinomial as:

{(4x - 7)}^{2}

If we were to expand this out as:

(4x - 7)(4x - 7)

and multiply it back into the original form. It would match with the expression we started with. The 4's would multiply back into 16x^2 and the 7's would multiply back into 49.

Additionally 4 * -7 is -28, so you can combine two -28x's into the -56x term in the original trinomial.

Thus, the answer is yes you can, and the answer is:

{(4x - 7)}^{2}

6 0
3 years ago
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