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kari74 [83]
2 years ago
7

What is 2 plus 2 also what is the square root of 500

Mathematics
2 answers:
disa [49]2 years ago
4 0

2+2=4 and the square root of 500 is 22.360679775

nika2105 [10]2 years ago
3 0

Answer:

2 + 2 = 4

root(500)  = \sqrt{500} =  10 * \sqrt{5}  = 2.236067977

Step-by-step explanation:

2 + 2 = 4

root(500)  = \sqrt{500} =  10 * \sqrt{5}  = 2.236067977

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A theory predicts that the mean age of stars within a particular type of star cluster is 3.3 billion years, with a standard devi
Luden [163]

Answer:

Null hypothesis:\mu \leq 3.3  

Alternative hypothesis:\mu > 3.3  

z=\frac{3.4-3.3}{\frac{0.4}{\sqrt{50}}}=1.768  

Since is a one right tailed test the p value would be:  

p_v =P(z>1.768)=0.039  

Step-by-step explanation:

Data given and notation

\bar X=3.4 represent the sample mean  

\sigma=0.4 represent the population deviation for the sample

n=50 sample size  

\mu_o =3.3 represent the value that we want to test  

\alpha represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses to be tested  

We need to conduct a hypothesis in order to determine if the mean is higher than 3.3, the system of hypothesis would be:  

Null hypothesis:\mu \leq 3.3  

Alternative hypothesis:\mu > 3.3  

Compute the test statistic  

We know the population deviation, so for this case is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

We can replace in formula (1) the info given like this:  

z=\frac{3.4-3.3}{\frac{0.4}{\sqrt{50}}}=1.768  

P value

Since is a one right tailed test the p value would be:  

p_v =P(z>1.768)=0.039  

6 0
2 years ago
Nathan's kite is in the shape of a square. The area of the kite is 36 square feet. what is the perimeter, in feet, of Nathan's k
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Answer:

I think the answer is 9ft squared is the perimeter on each side of the kite.

Step-by-step explanation:

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3 years ago
Please please help thanks!
lidiya [134]

Answer:

Step-by-step explanation:

14^3

4 0
3 years ago
Read 2 more answers
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Naya [18.7K]

Answer:

7n-6=-20

Step-by-step explanation:

six less than seven times a number

we'll use n as "the number"

six less meaning -6

7 times a number n = 7n

7n-6=-20

7 0
2 years ago
Rewrite 5ab showing the multiplication signs
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Answer:

5ab = 5 \times a \times b

Step-by-step explanation:

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