10 is the number halfway between -5 and 15.It is: 5
The number is 15.
It is (-15 + 20)/2 = 5/2 = 2.5
90 is.
5+5 = 10 10+5 = 15 15-5 = 15 10+5 = 15
10 is the number halfway between -5 and 15.It is: 5
15
It is 7.
15 is divisible by 3 and 5, because 15/3=5, and 15/5=3.
16
The number is 15.
It is (-15 + 20)/2 = 5/2 = 2.5
Such a number does not exist. 3600 is 60 squared and 4900 is 70 squared There is no number between 60 and 70 that is a multiple of 15 so there can be no square between 3600 and 4900 that is a multiple of 15.
There is no such number.
It is (5 + 10)/2 = 15/2 = 7.5
because the closest number between these 2 numbers is 15
90 is.