anonymous
  • anonymous
I need help with math please wait while I type the equation into the comments.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
\[(-27)^{\frac{ 2 }{ 3 }}\]
anonymous
  • anonymous
It's multiple choice a. -9 b. 9 c. 81 (I thought it was -9 but that turned out wrong)
anonymous
  • anonymous
@AutumnRoseT thanks but I need to actually know how to do it and I don't need to graph it

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deana99
  • deana99
I can help
anonymous
  • anonymous
OK thank you @deana99 please do.
anonymous
  • anonymous
Look, I know the answer is nine but I just need to know how to figure that out.
amistre64
  • amistre64
the top of the fraction tells us the power, the bottom tell us the root
amistre64
  • amistre64
what is (-27)^2
anonymous
  • anonymous
729
amistre64
  • amistre64
good now we root it \[\sqrt[3]{729}\]
anonymous
  • anonymous
I don't know how to do that
amistre64
  • amistre64
2/3 power of 2, root of 3
amistre64
  • amistre64
well, you can formulate a table of perfect cubes maybe ... and compare
amistre64
  • amistre64
what is 10^3?
anonymous
  • anonymous
300
amistre64
  • amistre64
no, 10*10*10 is not 300
Here_to_Help15
  • Here_to_Help15
hint 100*10= ?
anonymous
  • anonymous
i mean 1000
Here_to_Help15
  • Here_to_Help15
Ding ding :)
amistre64
  • amistre64
1000 yes, and 729 is less than that, so we are less then 10^3 what is 5^3?
anonymous
  • anonymous
125
anonymous
  • anonymous
ok so it's nine
anonymous
  • anonymous
because nine cubed is 729
amistre64
  • amistre64
and 125 is less then 729 we know we are between 5 and 10 what is 6^3, 7^3, 8^3, and 9^3 yeah, its 9, since 9^3 = 729 :)
anonymous
  • anonymous
OK thank you
amistre64
  • amistre64
the idea tho is to power the top , then root the bottom
amistre64
  • amistre64
one idea, if you feel spirited: (-27)^(2/3) = y (-27)^(2/3) * (-27)^(1/3) = y(-27)^(1/3) (-27)^(2/3+1/3) = y(-27)^(1/3) -27 = y(-3) -27/(-3) = y
Here_to_Help15
  • Here_to_Help15
Dividing a negative and a negative you will get a positive! IMPORTANT TO KEEP IN MIND :)
Here_to_Help15
  • Here_to_Help15
Positive and negative will be NEGATIVE AND + and + will be +
anonymous
  • anonymous
Yeah thanks @Here_to_Help15 very helpful
Here_to_Help15
  • Here_to_Help15
:)

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