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Mathematics 8 Online
OpenStudy (anonymous):

Evaulate

myininaya (myininaya):

\[\sqrt{81}=?\]

myininaya (myininaya):

what number when you multiply it to itself will give you 81?

OpenStudy (anonymous):

27?

myininaya (myininaya):

so you think 27*27=81?

myininaya (myininaya):

27*27 does not equal 81

myininaya (myininaya):

\[\sqrt{4}=2 \text{ ( because } 2 \cdot 2=4)\] \[\sqrt{9}=3 \text{ ( because } 3 \cdot 3=9)\] \[\sqrt{16}=4 \text{ ( because } 4 \cdot 4=16)\] \[\sqrt{25}=5 \text{ ( because } 5 \cdot 5=25 )\]

OpenStudy (anonymous):

-9?

myininaya (myininaya):

\[\sqrt{81}=9\] \[\sqrt{100}=?\]

OpenStudy (anonymous):

10

OpenStudy (anonymous):

its B!~

OpenStudy (anonymous):

9 -- 10

myininaya (myininaya):

ok and you had a negative sign in front of it, right?

OpenStudy (anonymous):

Yes -9 -- 10

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