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devlian [24]
3 years ago
14

What is (2x)^3 I need help

Mathematics
2 answers:
m_a_m_a [10]3 years ago
8 0
So I think this is asking what’s 2x to the third power.
Well, that’s essentially saying what’s 2x Times 2x Times 2x

When we do that, we get 8x^3
Anastasy [175]3 years ago
3 0
Rewritten is (2x) (2x) (2x) which equals 8x^3
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The per capita electric power consumption level in a recent year in Ecuador is normally distributed, with a mean of 471.5 kilo-w
Olin [163]

Answer:

a) 471.5 kilo-watt hours.

b) 31.76 kilo-watt hours

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For the population:

Mean 471.5 kilo-watt hours.

Standard deviation of 187.9 kilowatt-hours.

For the sample:

Sample size of 35, by the Central Limit Theorem:

a) Mean

471.5 kilo-watt hours.

b) Standard deviation

s = \frac{187.9}{\sqrt{35}} = 31.76

31.76 kilo-watt hours

7 0
3 years ago
Please help me with 8 im so very stuck i know how to do those but nothing will factor into eachother
Kisachek [45]

Answer:

lol number 8 is x= i, -i , \frac{3}{4}, -4 so u are correct.

and number 7 is x=-\frac{1}{2} or \sqrt[5-i]\sqr\frac{23}{8}

Step-by-step explanation:

7 0
2 years ago
PLEASE HELP ME
Citrus2011 [14]
The answer is -15 yayaya
6 0
3 years ago
The ratio of the surface areas of two similar solids is 49:100. What is the ratio of their corresponding side lengths?
algol13
<span>ratio of surface area = 49:100
ratio of corresponding lengths = √49:√100 = 7:10
answer: C

Hope this helps


</span>
3 0
3 years ago
Read 2 more answers
It took Everly 55 minutes to run a 10-kilometer race last weekend if you know that 1 kilometer equals 0.621 mile how many minute
ikadub [295]
55 min/10 km=5.5 min/km

5.5 min/km x 1 km/.621 mile= 5.5/.621=8.86 min/mile

The answer is D.
3 0
3 years ago
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