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2 years ago

Jackie surveyed the first 20 students in the lunch line.

Mathematics

2 answers:

Yanka [14]2 years ago

5 0

Answer:

Yes

Step-by-step explanation:

It is a random sample of students because they are just random people that Jackie is asking, its not only people in on grade, or only people on the basketball team.

Readme [11.4K]2 years ago

4 0

The answer to this is yes

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telo118 [61]

Option A

The solution is:

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Solution:

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We have to solve the equation f(x) = 0

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$\mathrm{Subtract\:}152\mathrm{\:from\:both\:sides}\\\\19x^2+152-152=0-152\\\\Simplify\ the\ above\ equation\\\\19x^2 = -152\\\\\mathrm{Divide\:both\:sides\:by\:}19\\\\\frac{19x^2}{19} = \frac{-152}{19}\\\\x^2 = -8$

Take square root on both sides

$x = \pm \sqrt{-8}\\\\x = \pm \sqrt{-1}\sqrt{8}\\\\\mathrm{Apply\:imaginary\:number\:rule}:\quad \sqrt{-1}=i\\\\x = \pm i\sqrt{8}\\\\x = \pm i \sqrt{2 \times 2 \times 2}\\\\x = \pm 2i\sqrt{2}$

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3 years ago

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Korvikt [17]

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Step-by-step explanation:

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