anonymous
  • anonymous
Which shows the number 28 factored into prime numbers? A. 4 · 7 B. 1· 2 · 2 · 7 C. 2 · 2 · 7 D. 3 · 7
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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LifeIsADangerousGame
  • LifeIsADangerousGame
The definition of prime means that the you can only get the number by multiplying itself by 1. For instance 2: You can only get two by multiplying 1 and 2 together. So which provided answer fits that definition AND equals 28 once you multiply it out?
anonymous
  • anonymous
sorry doun't understand
LifeIsADangerousGame
  • LifeIsADangerousGame
It's okay! Let's make a factoring tree. 28 is the number you start with. |dw:1442605156919:dw|

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LifeIsADangerousGame
  • LifeIsADangerousGame
So what I did was, I broke it down. 28 is equal to 4 * 7, but we want to get all the way to the lowest numbers possible, so we kept going. 4 is equal to 2 * 2 so you write that below the four. Then 7 is a prime number already so you put 7 * 1 So, the prime numbers you need to make 28 are: 2 * 2 * 7 * 1
LifeIsADangerousGame
  • LifeIsADangerousGame
Does that make more sense?
anonymous
  • anonymous
i think? so sorry
LifeIsADangerousGame
  • LifeIsADangerousGame
It's okay! Which part don't you understand?
anonymous
  • anonymous
ok first i gonna tell you which answer i think it is its okay for you
LifeIsADangerousGame
  • LifeIsADangerousGame
Sure
anonymous
  • anonymous
i think is B.
LifeIsADangerousGame
  • LifeIsADangerousGame
You're correct! But do you know why?
anonymous
  • anonymous
nop:(
LifeIsADangerousGame
  • LifeIsADangerousGame
Okay, give me two minutes and I will explain!
anonymous
  • anonymous
all write its ok
anonymous
  • anonymous
you have help me to much and if i have sometin hels to give you i will doit
LifeIsADangerousGame
  • LifeIsADangerousGame
That was a bit longer than two minutes, I'm sorry! I can always try to explain it later on if you'd like.

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