Question

math help

Answer 1

@Vocaloid @dude

Answer 2

well, as stated before anything with pi is irrational

with the two square roots - try evaluating them both with a calculator, one of them terminates (rational) and the other one goes forever with no pattern (irrational)

Answer 3

So -7.80 is rational I know that for sure

Answer 4

yes

Answer 5

Would the square root of 15 and 25 be rational?

Answer 6

25 yes (rational)
sqrt(15) irrational, since its a non-terminating decimal with no pattern

Answer 7

Ok, and the fraction would not be rational right?

Answer 8

the fraction is rational (5/18 = 0.277777777etc)

for fractions you just have to plug them into a calculator

Answer 9

And then -17x would not be rational

Answer 10

-17pi, yes that would be irrational