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4 years ago

14

9millimeters+3.3centimeters

1 answer:

madreJ [45]4 years ago

3 0

4.2 because millimeters are in the decimals section you just add 9 to 3
9+3=12
=4.2

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Quadratic formula 9x²-6x-11=0

Ipatiy [6.2K]

$9x ^{2}-6x-11=0 \\ \\ a=9 , \ b=-6, \ c = -11 \\ \\ \Delta = b^{2}-4ac = (-6)^{2}-4*9* (-11)= 36+396 = 432\\ \\\sqrt{\Delta }=\sqrt{432}= \sqrt{144*3}=12\sqrt{3}\\ \\x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{6-12\sqrt{3}}{2*9}=\frac{ 6(2-2\sqrt{3})}{18}= \frac{ 2-2\sqrt{3} }{3} \\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{6+12\sqrt{3}}{2*9}=\frac{ 6(2+2\sqrt{3})}{18}= \frac{ 2+2\sqrt{3} }{3}$

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4 years ago

Rajesh paid Rs 1665 to the restaurant manager after deducting 10% of total amount of original bill. What is the amount of origin

Natalija [7]

1665(0.9)=x
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3 years ago

Explain why 4,325 is greater than 798

fomenos

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7 0

3 years ago

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Plzzzz help :( will make u brainlist :) /math/

irga5000 [103]

Answer: 60 cm

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4 years ago

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I need help with the question please! I'm having a hard time answering it!

iogann1982 [59]

Answer:

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3 years ago