anonymous
  • anonymous
SUMMER MATH PACKET!! Check my work? :)
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
Sure
anonymous
  • anonymous
ill see what i can do
anonymous
  • anonymous
\[\sqrt{81x^5/3x}\] my answer was \[9x^2\sqrt{3}\]

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anonymous
  • anonymous
3x-[5-4(2x-7)] my answer was x-7
Hero
  • Hero
For the first one, 81/3 = 27 so...your answer to that one needs some adjusting
anonymous
  • anonymous
The second one is correct
anonymous
  • anonymous
Ya the second one is all good!
agent0smith
  • agent0smith
\[\Large \sqrt{\frac{ 81x^5 }{ 3x}} = \sqrt {27 x^4} = \sqrt { 9*3 x^4}\]
anonymous
  • anonymous
so the first answer is...\[3x^2\sqrt{3}\]
anonymous
  • anonymous
\[\sqrt{16x^2}\] x\[\sqrt{3x^3}\] my answer was \[4x^2\sqrt{3x}\]
anonymous
  • anonymous
\[45x ^{7}y ^{4}z\]\[\div 9x ^{2}y ^{8}z ^{4}\] my answer was \[5x ^{5}\div y ^{4}z ^{3}\]
anonymous
  • anonymous
Q: \[45x^7y^4z÷9x^2y^8z^4\] A: \[\frac{ 5x^5 }{ y^4z^3 }\]
anonymous
  • anonymous
Seems right.

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