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3 years ago

Is 7a prime number or composite number?

Mathematics

1 answer:

lubasha [3.4K]3 years ago

6 0

composite, When a number has more than two factors it is called a composite number.

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If vertex A is at (-1, 2) and vertex B is at (1, 5), then vertex A' is at and vertex B' is at .

lukranit [14]

The answer would be -0.5

5 0

3 years ago

From previous polls, it is believed that 66% of likely voters prefer the incumbent. A new poll of 500 likely voters will be cond

Vladimir79 [104]

Answer:

The mean and standard deviation of the number preferring the incumbent is mean = 330, standard deviation = 10.59.

Step-by-step explanation:

We are given that From previous polls, it is believed that 66% of likely voters prefer the incumbent.

A new poll of 500 likely voters will be conducted. In the new poll the proportion favoring the incumbent has not changed.

Let p = probability of voters preferring the incumbent = 66%

n = number of voters polled = 500

So, the mean of the number preferring the incumbent is given by;

Mean = $n \times p$ = $500 \times 0.66$

= 330 voters

And, standard deviation of the number preferring the incumbent is given by;

Variance = $n \times p\times (1-p)$

= $500 \times 0.66 \times (1-0.66)$

= 112.2

So, Standard deviation = $\sqrt{Variance}$

= $\sqrt{112.2}$ = 10.59

7 0

3 years ago

PLEASE HELP

Studentka2010 [4]

The side length for a cube
with volume 8000cm3 = 8000^(1/3)= 20 m
Cheers,
Stan H.8000=S^38000=20^3
so the answer will be B

3 0

3 years ago

how many square feet will cover a rectangle 60 feet by 20 feet? Explain how you determined your answer

nika2105 [10]

Answer:

1200

Step-by-step explanation:

2 times 6 = 12

12 times 100 = 1200

Hope this helps if does not please let me know thanks!

7 0

3 years ago

an arts academy requires there to be 6 teachers for every 132 students and 3 tutors for every 27 students . how many students do

Nina [5.8K]

Answer:

Step-by-step explanation:

The number of necessary tutors when you divide 27 into 72, is 2.6; therefore the necessary number of tutors is 3 because you can’t have .6 of a tutor. Hope this helps!

4 0

3 years ago