Homework Help: help? math ?

Posted by gary on Sunday, January 27, 2013 at 10:26pm.

1. when z is divided by 8, the remainder is 5. What is the remainder when 4z is divided by 8 ?

2. If n is an integer, which of the following must be odd ?

A. 3n-5
B. 3n + 4
C. 4n + 10
D. 4n - 5
E. 5n + 7

help? math ? - Reiny, Sunday, January 27, 2013 at 10:47pm
1. 1

2. To have an odd answer to an addition or subtraction , one number must be even the other odd.

looking at D), 4n is always even
so even - odd = odd

choice is D

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