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lbvjy [14]
3 years ago
12

Jack says ‘3 and 13 are both prime numbers, all whole numbers that end in 3 a prime numbers’. Write down an example that proves

that this statement is not true
Mathematics
1 answer:
Usimov [2.4K]3 years ago
3 0

A seven is a prime number because you can't divide it. 33 is a composite number because three can go into 33.

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5n+4=39 find the value of n that makes this equation true
Bond [772]
5n + 4 = 39
5n = 39 -4
5n = 35
n = 35:5
n = 7
4 0
3 years ago
Read 2 more answers
Find the surface area of the triangular prism?
viva [34]

Answer:

Step-by-step explanation:

Surface area of a triangular prism

Height = 8cm

12cm

10cm

This given as:

S.A = B + Ph

8 0
3 years ago
Rationalise the denominator 5 by√7-√5
taurus [48]

i wasn't sure on how to explain it so i just attached ur answer

4 0
3 years ago
After a college football team once again lost a game to their archrival, the alumni association conducted a survey to see if alu
valentina_108 [34]

Answer:

P-value for this hypothesis test is 0.00175.

Step-by-step explanation:

We are given that the alumni association conducted a survey to see if alumni were in favor of firing the coach.

A simple random sample of 100 alumni from the population of all living alumni was taken. Sixty-four of the alumni in the sample were in favor of firing the coach.

<u><em>Let p = proportion of all living alumni who favored firing the coach</em></u>

SO, Null Hypothesis, H_0 : p = 0.50   {means that the majority of alumni are not in favor of firing the coach}

Alternate Hypothesis, H_A : p > 0.50   {means that the majority of alumni are in favor of firing the coach}

The test statistics that will be used here is <u>One-sample z proportion</u> <u>statistics</u>;

                                  T.S.  = \frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }  ~ N(0,1)

where, \hat p  = sample proportion of the alumni in the sample who were in favor of firing the coach = \frac{64}{100} = 0.64

            n = sample of alumni = 100

So, <em><u>test statistics</u></em>  =  \frac{0.64-0.50}{{\sqrt{\frac{0.64(1-0.64)}{100} } } } }

                               =  2.92

<u>Now, P-value of the hypothesis test is given by ;</u>

         P-value = P(Z > 2.92) = 1 - P(Z \leq 2.92)

                                             = 1 - 0.99825 = 0.00175

Therefore, the P-value for this hypothesis test is 0.00175.

4 0
3 years ago
Create a factorable polynomial with a GCF of 2y. Rewrite that polynomial in two other equivalent forms. Explain how each form wa
Nezavi [6.7K]
2y^2 = x^2

y = x/sqrt(2)


how?

y = (x^2)/(2y)

y(2y) = (x^2)(2y)/(2y)

8 0
3 years ago
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