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Mathematics 16 Online
OpenStudy (volleyballlover55):

Part A: Find a rational number that is between 9.5 and 9.7. Explain why it is rational. Part B: Find an irrational number that is between 9.5 and 9.7. Explain why it is irrational. Include the decimal approximation of the irrational number to the nearest hundredth.

OpenStudy (volleyballlover55):

@ijlal

OpenStudy (volleyballlover55):

please help :)

OpenStudy (ijlal):

Nooooo the decimals questions xD working on it a moment !

OpenStudy (volleyballlover55):

ok let me know when your done!

OpenStudy (ijlal):

sure

OpenStudy (dayakar):

rational number between a and b = (a+b)/2

OpenStudy (greep):

part A: 9 and two thirds can be represented as 27/3 which is a rational number.

OpenStudy (dayakar):

irrational number between a and b = \[\sqrt{a*b}\]

OpenStudy (greep):

*29/3. oops.

OpenStudy (volleyballlover55):

no i think 27/3 is correct.. because when you divide that it gives you nine @greep

OpenStudy (volleyballlover55):

@ijlal do you have the answers?

OpenStudy (ijlal):

found out a method how to get irrational ones on the internet

OpenStudy (ijlal):

(9.5)² = 90.25 now add a decimal to it, like 0.1... (we're adding because we started from the smaller number) 90.35 √90.35 ≈ 9.50526170076... ≈ 9.51

OpenStudy (volleyballlover55):

so hold on.. whats the answer for part A

OpenStudy (ijlal):

or sqrt92 = 9.59 ~ 9.60

OpenStudy (volleyballlover55):

ok.. so whats a rational number between 9.5 and 9.7?

OpenStudy (ijlal):

Hold on fresh start here for the first one rational number between 9.5 and 9.7 can be 48/5 that is 9.6

OpenStudy (volleyballlover55):

ok and can you explain why 9.6 is rational?

OpenStudy (ijlal):

and for the irrational one the perfect squaring and adding 0.1 to it to get the irrational number approximated to the nearest hundreth

OpenStudy (ijlal):

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