wintersuntime
  • wintersuntime
Can someone be nice enough to help me please on this question -> Evaluate each expression if r=-3, s=4 and t=7
Mathematics
katieb
  • katieb
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wintersuntime
  • wintersuntime
A. r2+√s
mathstudent55
  • mathstudent55
The first step is to replace the variables with their values. |dw:1439255162674:dw|
mathstudent55
  • mathstudent55
Now do the arithmetic. (-3)^2 = (-3)(-3) = ? \(\sqrt 4 = ?\)

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wintersuntime
  • wintersuntime
2
wintersuntime
  • wintersuntime
So total is -7
wintersuntime
  • wintersuntime
zzr0ck3r
  • zzr0ck3r
what is \((-3)^3=(-3)(-3)=?\)
zzr0ck3r
  • zzr0ck3r
hint: two negatives multiplied together give a positive. What is \(\sqrt{4}\)? hint: it is 2. Add those numbers to get ? hint: it starts and ends with a \(1\), and there are only two digits.
mathstudent55
  • mathstudent55
|dw:1439338970853:dw|
wintersuntime
  • wintersuntime
Thanks

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