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LuckyWell [14K]
3 years ago
12

Lyla i am not cheating Guys please helps.

Mathematics
1 answer:
Amanda [17]3 years ago
3 0

Answer:

C.  6√5

Step-by-step explanation:

√20 +√80= √4*5 + √16*5 = 2√5 + 4√5 = 6√5

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Dean invests $500 for 10 years at a rate of 1.7% per year simple interest. Calculate the total interest earned during the 10 yea
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Explanation:

4 0
3 years ago
X-Y=5, 6X-6Y =?
denis-greek [22]

Answer:

<u>Yes, it is 30</u>

Step-by-step explanation:

And yes, you thought it through correctly.  6(X-Y) = 6*5

6(X-Y) = <u>30</u>

3 0
3 years ago
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The highest recorded temperature during the month of July for a given year in Death Valley, California has an approximately norm
S_A_V [24]

Answer:

P(X

And we can find this probability using excel or the normal standard tabe and we got:

P(z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the temperatures of a population, and for this case we know the distribution for X is given by:

X \sim N(123.8,3.1)  

Where \mu=123.8 and \sigma=3.1

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X

And we can find this probability using excel or the normal standard tabe and we got:

P(z

6 0
3 years ago
I need this quick!!What is the surface area of the square pyramid?<br> square units
AlexFokin [52]

Answer:

16

Step-by-step explanation:

6 0
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Neuma should have only divided 9 by 9, not 54 by 9

Step-by-step explanation:

i hope it helps and is correct

6 0
3 years ago
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