roberttsemily11 roberttsemily11

11-04-2019
Mathematics

contestada

SOMEONE PLEASE PLEASE HELP
which is a rational number?
a. √9
b.√15
c. √18
d. √20

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

11-04-2019

Answer:

a. √9

Step-by-step explanation:

a. √9 = 3

b.√15 = sqrt(5*3) cannot be simplified

c. √18 = sqrt(9) sqrt(2) = 3 sqrt(2) cannot be simplified farther

d. √20= sqrt(4) sqrt(5) = 2 sqrt(5) cannot be simplified farther

a is the only answer that is a rational number

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