3 years ago

Henry drives at a speed of 80miles per hour how long will it take to drive 400miles

Mathematics

2 answers:

Mama L [17]3 years ago

8 0

5.5 hours
Step-by-step explanation:

AleksAgata [21]3 years ago

6 0

5 hours. hope this helps

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4 years ago

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Debora [2.8K]

We can use quadratic formula to determine the roots of the given quadratic equation.

The quadratic formula is:

$x= \frac{-b+- \sqrt{ b^{2} -4ac} }{2a}$

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c = constant term = 15

Using the values, we get:
$x= \frac{11+- \sqrt{121-4(2)(15)} }{2(2)} \\ \\ 
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3 years ago

Will give Brainliest! What is the simplified form of the seventh root of x to the fifth power times the seventh root of x to the

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Step-by-step explanation: