discrete math
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discrete math
prove that if n is an integer and 3n+2 is even, then n is even using a)a proof by contraposition b)a proof by contradiction I'll try part b, you'll have to refresh me on what contraposition means here. Here is the claim we start
asked by audryana on September 27, 2006 
Discrete Math
1. Assume that n is a positive integer. Use the proof by contradiction method to prove: If 7n + 4 is an even integer then n is an even integer. 2. Prove: n is an even integer iff 7n + 4 is an even integer. (Note this is an if and
asked by Math help on February 21, 2008 
Algebra 1 Polynomials
Suppose n is an integer. Select all statements below that are true: (choose 3) A) n^2 + n is always an even integer*** B) n^2 + n is always an even integer when n is even*** C) n^2 + n is always an even integer when n is odd*** D)
asked by Gerard Way on March 8, 2017 
Algebra
The sum of two consecutive odd integers is 56. A. Define a variable for the smaller integer. B. What must you add to an odd integer to get the next greater odd integer? C. Write an expression for the second integer. D. Write and
asked by Bri on October 14, 2011 
Math
Let a, b, and m be integers, and m ≥ 2. Prove that: ab ≡ [ (a mod m) · (b mod m) ] (mod m). So I tried proof by cases: Assume ab ≡ [(a mod m) ∙ (b mod m)] mod m is true. Then ab mod m = [(a mod m) ∙ (b mod m)] mod m,
asked by Kid on November 9, 2018 
DISCRETE MATHS
We need to show that 4 divides 1n2 whenever n is an odd positive integer. If n is an odd positive integer then by definition n = 2k+1 for some non negative integer, k. Now 1  n2 = 1  (2k+1)2 = 4k24k = 4 (k24k). k is a
asked by Don(please check my math) on October 24, 2013 
maths
prove that any odd positive integer of 8q+1,where q is any integer?
asked by sandra on April 17, 2012 
Algebra
Find two consecutive odd integers such that 5 times the first integer is 12 more than 3 times the second. I've gotten this far but confused as to what the two intergers are. 5x=3(x+2)=12 5x=3x+2+12 5x=3x+14 2x=14 2x/2x=14/2 x=7
asked by Amanda on April 22, 2007 
algebra
Find the two consecutive odd integers such that 5 times the first integer is 12 more than 3 times the second. can some explain to me how to get this i was thinking the formula would be ' 5x+12=3x No, that's not it. The second
asked by laura on March 29, 2007 
Algebra Word Problem
Solve algebraically using one variable: Find three consecutive odd integers such that the product of the first integer and the third integer is equal to nine more than twelve times the middle integer.
asked by Tony on February 20, 2017