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4 years ago

What are prime numbers?

1 answer:

5 0

Prime numbers are number that can't be divided except it is it's self and 1. For example, 3,5,7,11,13,17, 19, 23, 29, 31, 37...... All of those numbers can only be divided with itself and 1.

3 = 3x1
7 = 7x1
23= 23 x 1

hope this helps

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AnnyKZ [126]

Answer:

what's the question ndndn

6 0

3 years ago

Read 2 more answers

An analytical laboratory is asked to evaluate the claim that the concentration of the active ingredient in a specimen is 86%. Th

Olenka [21]

Answer:

Decision rule

Reject null hypothesis

Conclusion

There is significance evidence that the true mean is different from 0.86

Step-by-step explanation:

From the question we are told that

The population mean $\mu = 0.86$

The sample is mean is $\= x = 0.8708$

The standard deviation is $\sigma = 0.0068$

The level of significance is $\alpha = 0.01$

The sample size n = 3

The null hypothesis is $\mu = 0.86$

The alternative hypothesis is $\mu \ne 0.86$

Generally the test statistics is mathematically represented as

$z = \frac{\= x - \mu }{ \frac{\sigma}{\sqrt{n} } }$

=> $z = \frac{ 0.8708 - 0.86 }{ \frac{0.0068}{\sqrt{3} } }$

=> $z = 2.751$

Generally p- value is mathematically represented as

$p-value = 2 P(z >2.751 )$

From the z-table

$P(z >2.751 ) = 0.0029707$

$p-value = 2 * 0.0029707$

=> $p-value = 0.00594$

From the obtained question we see that $p-value < \alpha$

Hence we reject the null hypothesis

6 0

3 years ago

Find the difference of 42 3/4 - 34 1/8. <br> Pleasee help asap

ValentinkaMS [17]

8 5/8 or 8.625; have a good one

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3 years ago

6 out of 10 students completed their homework. What is the ratio of students who did not do their homework to those who did?

ludmilkaskok [199]

Answer:

2/3 or 2:3

Step-by-step explanation:

If 6 out of 10 students completed the homework then 4 out of 10 students did not complete the homework.

So the answer is 4/6 but we are not done yet.

The 4 comes from people who didn't do it and the 6 comes from people who did.

Since its asking the ratio of students who did not do their homework to those who did the 4 comes first.

As I said we are not done yet since we have to simplify.

4/6=2/3

So the answer is 2/3 or 2:3

5 0

4 years ago

Find the ordered pairs for the x- and y-intercepts of the equation 2x − 6y = 24 and select the appropriate option below.

nexus9112 [7]

Answer:

x-intercept= 12

y-intercept=-4

Step-by-step explanation:

8 0

3 years ago