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pashok25 [27]
3 years ago
7

Simplify (2^3)^–2. need help now please

Mathematics
2 answers:
masha68 [24]3 years ago
8 0

Answer:

1/64

Step-by-step explanation:

Screenshot of explanation

Sladkaya [172]3 years ago
6 0

Answer:

1/64 is the answer

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Factor completely 3x3 − 21x2 − 27x
den301095 [7]

Answer: I dont understand this "27x", are you missing a number?

Hello!

______________________

3x3 − 21x2 − 27x

=

-0.1 ( 270x + 179 )

Step-by-step explanation: Factor the polynomial.

Hope this helped you!

4 0
3 years ago
Please need help will give brainliest
Debora [2.8K]

Answer:

18.3 \times 4.25 = 77.775

6 0
3 years ago
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Find the perimeter of rectangle PQRS with vertices P(0,0), Q(0,7), R(12,7) & S (12,0)
romanna [79]
P=7+7+12+12P=14+24P=38

See the attachment for diagram

8 0
3 years ago
A certain region currently has wind farms capable of generating a total of 2200 megawatts (2.2 gigawatts) of power. Assuming win
sveta [45]

Answer:

<u>The correct answer is A. 4,818'000,000 kilowatt-hours per year and B. 481,800 households.</u>

Step-by-step explanation:

1. Let's review the information provided to us for solving the questions:

Power capacity of the wind farms = 2,200 Megawatts or 2.2 Gigawatts

2. Let's resolve the questions A and B:

Part A

Assuming wind farms typically generate 25​% of their​ capacity, how much​ energy, in​ kilowatt-hours, can the​ region's wind farms generate in one​ year?

2,200 * 0.25 = 550 Megawatts

550 Megawatts = 550 * 1,000 Kilowatts = 550,000 Kilowatts

Now we calculate the amount of Kilowatts per hour, per day and per year:

550,000 Kw generated by the farms means that are capable of produce 550,000 kw per hour of energy

550,000 * 24 = 13'200,000 kilowatt-hours per day

<u>13'200,000 * 365 = 4,818'000,000 kilowatt-hours per year</u>

Part B

Given that the average household in the region uses about​ 10,000 kilowatt-hours of energy each​ year, how many households can be powered by these wind​ farms?

For calculating the amount of households we divide the total amount of energy the wind farms can generate (4,818'000,000 kilowatt-hours) and we divide it by the average household consumption (10,000 kilowatt-hours)

<u>Amount of households =  4,818'000,000/10,000 = 481,800</u>

8 0
3 years ago
Rosalina just started a new job. She has $500 in her bank account. Every week, she deposits $40 into her bank account. Write an
Mrrafil [7]

Answer:

10.14 years

Step-by-step explanation:

The following equation describes the percentage of all eligible voters that are registered to vote as a function of time:

V=100-30e^{-0.04t}

The time 't' for which V(t) = 80 is the amount of years required for the percentage of registered voters to reach 80%:

80=100-30e^{-0.04t}\\\frac{20}{30}= e^{-0.04t}\\ln(\frac{2}{3})=-0.04t*ln(e)\\ t=10.14\ years

It will take 10.14 years until 80% of all eligible voters in your county are registered to vote

8 0
3 years ago
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