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s344n2d4d5 [400]
2 years ago
12

Plzzzzzz help. I have to waist so many points becouse peaple dont answer my question plzzzzzz help will give brainliest (pic dow

n below)
A model house that runs completely on renewable energy uses 222 windmills and 333 solar panels. Each windmill generates MMM kilowatt-hours (kWh) of energy per year, and each solar panel generates SSS kWh per year.
Which expressions can we use to describe how many kWh of energy the model house will output in 101010 years?
Choose 2 answers:

Mathematics
1 answer:
Ronch [10]2 years ago
5 0

Answer:

10(2M+3S)

20M+30S

Step-by-step explanation:

we know that

The number of kWh of energy that the model house generate per year is given by the sum of  kWh of energy generates by the windmills multiplied by the number of windmills, plus the  kWh of energy generates by the solar panels multiplied by the number of solar panels.

so

2M+3S

For 10 year

Multiply the expression above by 10

10(2M+3S)

Apply distributive property

20M+30S

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Suppose Celine wants to choose a box that maximizes the amount of cereal it can hold. Volume of Box 1: 3x5 Volume of Box 2: 4x5
finlep [7]

The <em><u>correct answer</u></em> is:

Box 2

Explanation:

In these expressions, x represents the width of the box.  We are asked about widths greater than 1; let's us 1.1 as an example:

Box 1:

3(1.1⁵) = 4.83153

Box 2:

4(1.1⁵)-(1.1⁴) = 6.44204 - 1.4641 = 4.97794

With a difference as small as a tenth, the volume of box 2 is larger.  The larger the difference in width, the larger the difference in volume, and the volume of box 2 will be larger every time.

3 0
2 years ago
Read 2 more answers
Bella works at the Blue River Cabin Resort, which has 220 rooms. Each room is available at a price of $79 per night Bella uses t
Sliva [168]

Answer:

R(x) is  your answer

Step-by-step explanation:

3 0
2 years ago
A study of long-distance phone calls made from General Electric Corporate Headquarters in Fairfield, Connecticut, revealed the l
iren [92.7K]

Answer:

0.2611

Step-by-step explanation:

Given the following information :

Normal distribution:

Mean (m) length of time per call = 3.5 minutes

Standard deviation (sd) = 0.7 minutes

Probability that length of calls last between 3.5 and 4.0 minutes :

P(3.5 < x < 4):

Find z- score of 3.5:

z = (x - m) / sd

x = 3.5

z = (3.5 - 3.5) / 0.7 = 0

x = 4

z = (4.0 - 3.5) / 0.7 = 0.5 / 0.7 = 0.71

P(3.5 < x < 4) = P( 0 < z < 0.714)

From the z - distribution table :

0 = 0.500

0.71 = very close to 0.7611

(0.7611 - 0.5000) = 0.2611

P(3.5 < x < 4) = P( 0 < z < 0.714) = 0.2611

3 0
2 years ago
There is a harvest festival each year on the planet Bozone. During that time, most of the Bozone residents sit down to rejoice a
Oliga [24]

Answer:

The price would be decreased by 18 bozats

Step-by-step explanation:

The following information is given in the question

x = number of kilograms of snig sold

P = Price per kilogram

And, the equation is

p = 300 - 18x

Now if an extra kilogram is sold so it should be x+1

Now the new price is

New price = 300 - 18(x + 1)

= 300 - 18x - 18

Therefore the price would be decreased by 18 bozats

8 0
2 years ago
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Mr Chua borrows a sum of money from the bank which charges a compound interest of 4.2% per annum, compounded 6.Given that Mr Chu
Inessa [10]

Answer:

Original sum of money = $2246.51

Step-by-step explanation:

Interest = $96.60

Interest is compounded 6 times in a year ; n = 6

time = 1 year ; Rate of interest (r) = 4.2%

Interest = Future Value - Principal Value ...........(1)

\text{Future Value = }Principal\cdot (1+\frac{r}{100\times n})^{n\cdot t}\\\\\text{Substituting this value in equation (1) , We get }\\\\Interest=Principal\cdot (1+\frac{r}{100\times n})^{n\cdot t}-Principal\\\\\implies 96.60=Principal[\cdot (1+\frac{4.2}{100\times 6})^{6\cdot 1}-1]\\\\\implies Principal=\$2246.51

Hence, the original sum of money borrowed = $2246.51

4 0
2 years ago
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