How many signals can be made with 4 different flags when any number of them are to be used.

8

step-by-step explanation:

just put √(2) * √(32) into a calculator. that will make the answer be 8.

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.