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grin007 [14]
3 years ago
12

1. Tell whether the number 47 is prime

Mathematics
2 answers:
kenny6666 [7]3 years ago
8 0

Answer:47 is a prime and 81 is a composite

Step-by-step explanation:47={1,47}

81={1,3,9,18,27,81}

Rina8888 [55]3 years ago
8 0

1. The number 47 is prime. The only factors are 1 and itself. We can check by dividing 47 over the list of primes smaller than 47. To be more efficient, we can stop once we reach sqrt(47) = 6.85. So we only need to check the primes {2, 3, 5} to show they are not factors of 47 to show that 47 is prime.

=====================================

2. The number 81 is composite. It is not prime because it has factors other than 1 and itself.

There are 5 factors and they are

1, 3, 9, 27, 81

Note how each factor listed is a power of 3 (1 = 3^0, 3 = 3^1, 9 = 3^2, 27 = 3^3, 81 = 3^4)

The prime factorization of 81 is

81 = 3*3*3*3 = 3^4

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7 0
3 years ago
The company has only two division division eight and division be last year division a made 60% of the companies total revenue an
MAVERICK [17]

9514 1404 393

Answer:

  Division A

Step-by-step explanation:

Suppose last year's revenue for the company was 100 units.

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3 0
3 years ago
Written Response! Please help!
sertanlavr [38]

Answer:

Hey there! The answer to your question is 30%

Step-by-step explanation:

Work:

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Than you do 100-70 and the answer would be 30%

so picking a purple marble Is likely to occur.

= 30%

Hope that helps!

By: xBrainly

3 0
3 years ago
Someone Help me please
bagirrra123 [75]

Answer:

25

Step-by-step explanation:

You plug in the g(x) function into the f(x) function as the x, after this you replace the x with -1 and solve for you answer, so it should look like

f(g(x))=(2x+7)^2

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3 0
2 years ago
3/8h=-9 (3 OVER 8)<br><br> plz help
Evgen [1.6K]
I think the answer is h=-24
5 0
3 years ago
Read 2 more answers
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