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3 years ago

Jaylen just finished a 7 mile run. How long (in minutes) do you think it took Jaylen?

Mathematics

2 answers:

Alexxandr [17]3 years ago

3 0

Depends how fast she run in mile average is 8 min a mile so if she is consistent it would take here 56 min to an hour

Vilka [71]3 years ago

3 0

Answer:

I need how many miles he ran in a hour so i can turn it into min.

Step-by-step explanation:

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Find the larger of the two roots of the equation y = -2.2x2 + 63.5x - 17

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The larger of the two roots of the equation $y = -2.2x^2 + 63.5x - 17$ would be 28.59.

<h3>How to find the roots of a quadratic equation?</h3>

Suppose that the given quadratic equation is

$ax^2 + bx + c = 0$

Then its roots are given as:

$x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

The given quadratic equation is

$y = -2.2x^2 + 63.5x - 17$

now, the roots of the equation are

$x = \dfrac{-63.5 \pm \sqrt{63.5^2 - 4(-2.2)(-17)}}{2(-2.2)}\\\\\\x = \dfrac{-63.5 \pm \sqrt{4032.25 - 149.6}}{(-4.4)}\\\\\\x = \dfrac{-63.5 \pm \sqrt{3882.65}}{(-4.4)}\\\\\\x = \dfrac{-63.5 \pm 62.31}{(-4.4)}$

The two roots are 0.27 and 28.59.

Thus, the larger of the two roots of the equation $y = -2.2x^2 + 63.5x - 17$ would be 28.59.

Learn more about finding the solutions of a quadratic equation here:

brainly.com/question/3358603

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