# help? math ?

posted by .

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 ? -

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

## Similar Questions

1. ### math

what is the least common positive integer that meets the following conditions: divided by 7 with remainder 4 divided by 8 with remainder 5 divided by 9 with remainder 6 i thought you could add 7 and 4 to get 13, then divide 13 and …
2. ### math

what is the least common positive integer that meets the following conditions: divided by 7 with remainder 4 divided by 8 with remainder 5 divided by 9 with remainder 6 i thought you could add 7 and 4 to get 13, then divide 13 and …
3. ### number theory

Find the least positive integer that leaves the remainder 3 when divided by 7, remainder 4 when divided by 9, and remainder 8 when divided by 11
4. ### Math

Find the least positive integer that leaves the remainder 3 when divided by 7, remainder 4 when divided by 9, and remainder 8 when divided by 11. Using the Chinese Remainder Theorem.
5. ### Math

How many integers bewteen 200 and 500 inclusive leave a remainder 1 when divided by 7 and a remainder 3 when divided by 4?
6. ### Math

How many integers between 200 and 500 inclusive leave a remainder 1 when divided by 7 and a remainder 3 when divided by 4?
7. ### Math

Find the smallest positive integer that leaves a remainder of 5 when divided by 7, a remainder of 6 when divided by 11, and a remainder of 4 when divided by 13.
8. ### math

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

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