Question

please help me

Answer 1

which ones are irrational and which ones are rational

A. \[\frac{ 3 }{ 7 }\]

Answer 2

B. 0.78 repeated

Answer 3

C. \[\sqrt{\frac{ 7 }{ 9 }}\]

Answer 4

D. 5pi

Answer 5

@ambujverma

Answer 6

@iGreen

Answer 7

@rational

Answer 8

hint:
we say that p is a rational number, when we can find two integers numbers, say m and n, such that:
\[\large \ p = \frac{m}{n}\]
being:
\[ \large n \ne 0\]

Answer 9

@SolomonZelman

Answer 10

a,b,c are rational and d is irrational

Answer 11

for example we can write 0.78 repeated, as below:
\[\large 0.\overline {78} = \frac{{78}}{{99}}\]

Answer 12

hint:
\[\large\sqrt {\frac{7}{9}} = \frac{{\sqrt 7 }}{3}\]
and
\[\large {\sqrt 7 }\] is irrational

Answer 13

ohh i figured it out

A and B are rational. And C and D are irrational

Answer 14

that's right!

Answer 15

thats correct because i just finished the test and got 100%