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ehidna [41]
3 years ago
6

Ellie and her family are driving to her grandmother’s house. The drive takes 2 4/5 h total. Ellie and her family have completed

3/5 of the drive.
About how many hours have Ellie and her family been driving?
Mathematics
1 answer:
Westkost [7]3 years ago
3 0
She has driven for about 1 hour and 28 minutes
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Find the product and sum of the roots of the equation:<br> 2x^2-9x-10=0
BabaBlast [244]

Answer:

<h3>           sum of the roots:    x_1+x_2=4\frac12</h3><h3>           product of the roots:     x_1x_2=-5             </h3><h3> Step-by-step explanation:</h3>

2x^2-9x-10=0\quad\implies\quad a=2\,,\ b=-9\,,\ c=-10

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From Vieta's formulas applied to quadratic polynomial we have:

if    b^2-4ac\geqslant0   then

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3 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Cpi%20%20x%5E%7B4%7D%20%2C%20%5Cpi%20%20x%5E%7B6%7D%20%2C%20%5Cpi%20%20x%5E%7B8%7D%20%2C%
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What is the y intercept of 3x62-6x+21=0
TiliK225 [7]

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Step-by-step explanation:

We calculate y-intercept by substituting 0 for x.

The equation becomes:

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