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Mathematics 13 Online
OpenStudy (periodicninja):

Given the two expressions shown below: A square root of 4 plus square root of 25 B square root of 4 plus square root of 2 Which statement best describes the two expressions? Both are rational. Both are irrational. A is rational, but B is irrational. A is irrational, but B is rational.

OpenStudy (kgrendel0324):

we meet again

OpenStudy (periodicninja):

yup

OpenStudy (kgrendel0324):

Okay so for a you have the sqrt of 4 and the sqrt of 25 what are those = to

OpenStudy (kgrendel0324):

the sqrt of 4 is 2 and sqrt of 25 is 5

OpenStudy (kgrendel0324):

5+2 is 7, 7 is an integer therefore it is a rational number.

OpenStudy (kgrendel0324):

but the sqrt of 4 is 2 and the sqrt of 2 is 1.4142... so that is a irrational number.

OpenStudy (kgrendel0324):

A rational # + a rational # = a rational #

OpenStudy (kgrendel0324):

irrational # + rational # = irrational #

OpenStudy (kgrendel0324):

so your answer is C. :D

OpenStudy (kgrendel0324):

If you need help just @ my name and I will be there

OpenStudy (periodicninja):

ok

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