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How can you prove tha2 equals 1?
It isn't equal, and any proof that they are equal is flawed.
Write an indirect proof for the following given 4y divided by6y 6 equals 20 prove y not equal to -1?
Assuming the given is written as: 4y/6y6=20 First off, this can be simplified down to: 2/3y5=20 Since this is an indirect proof, we must first assume the opposite of what you are trying to prove. You are trying to prove that y is not equal to -1. Let y=-1 If this was done, then the following substitution would be made: 2/3(-1)5=20 2/3(-1)=20 2/(-3)=20 -2/3 =20 Clearly, -2/3 does not equal 20. Since y=-1 causes a mathematically impossible statement, then y cannot equal -1. As far as formatting it for a formal indirect proof, I'm no help there. Different teachers like different formatting.
Is one third equal to five fifteenths?
YES ... to prove it, divide both the numerator and the denominator of 5/15 by 5 and you will get 1/3
How do you know that the mean of 1 2 3 4 5 does not equal 8?
You have to prove it by showing what the mean of the five numbers is. First, you add up the five numbers, which is equal to 15. Then, you divide the sum by 5, which is 3, and not 8.
Is 1 6 equal to 1 3?
2 sixths are equal to 1 third
