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3 years ago

brad studied a total of 24.4 hours over a period of four days. On average, how many hours did brad study each day?

Mathematics

2 answers:

stiv31 [10]3 years ago

8 0

He studied about 6 hours each day. Just divide 24.4 by 6 . If you want to give an accurate answer then it would be 6.1

Nady [450]3 years ago

6 0

24.4/4 =6.1 hours daily is the average hour per day

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A cylindrical can has a volume of 2in^(3). Express the surface area of the can as a function of its radius,r.

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The resulting equation after simplyfing the given equation is 3x^2 + 20x + 12 = 0 and whoose solutions are x = -2/3 or x = -6.

According to the given question.

We have an equation

$\frac{x^{2}-x-6 }{x^{2} } = \frac{x-6}{2x} +\frac{2x+12}{x}$

So, to find the resulting equation of the above equation we need to simplify.

First we will take LCD

$\frac{x^{2} -x - 6 }{x^{2} } = \frac{x -6+2(2x + 12)}{2x}$

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$\implies \frac{x^{2}-x-6 }{x^{2} } = \frac{5x +18}{2x}$

Multiply both the sides by x.

$\frac{x^{2}-x-6 }{x} = \frac{5x+18}{2}$

Again multiply both the sides by x

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$\implies 3x^{2} + 18x+2x + 12 = 0$

Factorize the above equation

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⇒(3x + 2)(x+6) = 0

⇒ x = -2/3 or x = -6

Hence, the resulting equation after simplyfing the given equation is 3x^2 + 20x + 12 = 0 and whoose solutions are x = -2/3 or x = -6.

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