marymary113201 marymary113201
  • 01-05-2019
  • Mathematics
contestada

Which of the following is a PRIME factor of 180?
A. 7
B. 4
C. 5
D. 9

Respuesta :

Cxlver
Cxlver Cxlver
  • 01-05-2019

Answer:

C

Step-by-step explanation:

Answer Link
brow4975
brow4975 brow4975
  • 01-05-2019

Answer:

5

Step-by-step explanation:

4 and 9 are composite numbers, so that automatically rules them out. The last two Prime numbers are 7 & 5, right?

180/7 = 25.71 - Since this ends up being a decimal, it cannot be a factor.

180/5 = 36

5 is both a prime number, and it factors evenly: this makes 5 the correct answer.

Hope I could help!

Answer Link

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