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4 years ago

5

What is the total number of milliliter of juice 20 people can drink

1 answer:

grandymaker [24]4 years ago

3 0

377m total people can drink

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If x- 3/4 =2 1/9 what does the x equals?

Romashka-Z-Leto [24]

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3 years ago

Which are perfect squares check all that apply 72 36 8 16 81 64 48

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Step-by-step explanation:

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3 years ago

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There are 12 months in a year. Use the drop-down menus to help write the equation that can be used to find the number of months,

stepladder [879]

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Step-by-step explanation:

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3 years ago

An arithmetic sequence with a third term of 8 and constant difference of 5

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-2,3,8,13,18,23,28,32

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3 years ago

What is the solution set of x2 + 5x + 1 = 0?

DerKrebs [107]

Answer:

$\huge\boxed{\left\{-\dfrac{5+\sqrt{21}}{2};\ \dfrac{-5+\sqrt{21}}{2}\right\}}$

Step-by-step explanation:

$x^2+5x+1=0\\\\\text{Use the quadratic formula:}\\\\\text{For}\ ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\\text{if}\ \Delta < 0,\ \text{then the equation has no real solution}\\\text{if}\ \Delta=0,\ \text{then the equation has one real solution}\ x=\dfrac{-b}{2a}\\\text{if}\ \Delta>0,\ \text{then the equation has two real solution}\ x=\dfrac{-b\pm\sqrt{\Delta}}{2a}$

$\text{We have}\\\\a=1,\ b=5,\ c=1\\\\\Delta=5^2-4(1)(1)=25-4=21>0\\\\x=\dfrac{-5\pm\sqrt{21}}{2(1)}=\dfrac{-5\pm\sqrt{21}}{2}$

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3 years ago