# C. Is 247 a prime or composite number? Explain.

3 answers

## Answers

247 is a composite number

Step-by-step explanation:

Prime numbers have only 2 factors, the number itself and 1.

247 can be divided by 13 and 19 as well, making it a composite number.

Cdoes not have two variables

[tex]Which one does not belong with the other three? explain your reasoning.[/tex]

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

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