Rational numbers are numbers which can be written as a fraction (the formula is p/q). They don't include roots we can't solve in order to get a whole number and pi.
A. 776, pi, 25.209, √9 ---> NO (because of pi)
B. 726, 7/34, 20.209, √9 ---> YES
C. √3, 7/39, 20.3, √9 ---> NO (because of √3)
D. 726, 7/34, 20.209, √5 ---> NO (because of √5
Note that √9 = 3, so it IS a rational number.
I can't see a table, this is how you increase the recipe;
Ratio Mark's using is: 3:2 then 6:4, 9:6, 12:8 so on..
It's weight would be: x*150 / 100
Where, x= weight of nickel
3x-5=10
To find the number:
3x=10+5
3x=15
x=15/3
x=5
