Find a rational number and an irrational number that are between 7.7 and 7.9. Include the decimal approximation of the irrational number to the nearest hundredth.

Question

anonymous · Answer

@iGreen can you help me please?

anonymous · Answer

@Gabylovesyou

igreen · Answer

Rational numbers can be expressed as fractions.

anonymous · Answer

ok

anonymous · Answer

so how would i express this very one?

igreen · Answer

$7 \dfrac{8}{10}$ is one. It simplifies to 7.8

anonymous · Answer

ok so then 7.8 would be the irrational number in between 7.7 and 7.9 right

igreen · Answer

Rational, not Irrational.

anonymous · Answer

oh ok

igreen · Answer

7.797979797979 is irrational.

igreen · Answer

It can't be expressed as a fraction because it has repeating decimals. It would actually be 7.79 with a line on top of 79.

anonymous · Answer

ok that make sense

anonymous · Answer

Reina and Sam are multiplying (84)5 (73)9.


Reina's Work	                                                          Sam's Work
(84)5 (73)9 = 84 + 573 + 9 = 89712 	(84)5 (73)9 = 84⋅573⋅9 = 820727

Is either of them correct? Explain your reasoning.