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Kamila [148]
4 years ago
5

Solve this quadratic function algebraically

Mathematics
1 answer:
Sonja [21]4 years ago
5 0

Answer:

Step-by-step explanation:

Please use " ^ " to denote exponentiation:  f(x)= 3x^2 - 6.

f(x)= 3x^2 - 6 can be factored (not solved) as follows:

f(x)= 3(x^ 2 -1) = 3(x - 1)(x + 1).

If you want a "solution," you must set f(x)= 3(x^ 2 -1) = 3(x - 1)(x + 1) = to 0 and solve the resulting equation for x:  x = 1 and x = -1.

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What is the total area of the regions between the curves y = 6x2 − 18x and y = −6x from x = 1 to x=3?.
kvasek [131]

Using integration, it is found that the area between the two curves is of 22 square units.

<h3>What is the area between two curves?</h3>

The area between two curves y = f(x) and y = g(x), in the interval from x = a to x = b, is given by:

A = \int_{x = a}^{x = b} |f(x) - g(x)| dx

In this problem, we have that:

f(x) = 6x^2 - 18x, g(x) = -6x, a = 1, b = 3.

Hence, the area is:

A = \int_{1}^3 |6x^2 - 12x| dx

A = |x^3 - 6x^2|_{x = 1}^{x = 3}

Applying the Fundamental Theorem of Calculus:

A = |3^3 - 54 - 1^3 + 6|

A = 22

The area between the two curves is of 22 square units.

More can be learned about the use of integration to find the area between the two curves at brainly.com/question/20733870

8 0
3 years ago
At a rate of 36 miles per hour, it takes Henry 15 minutes to drive from the library to his house. Show how to find the distance
EastWind [94]
This is applying the formula
distance=rate*time

We have a slight problem, though, because we are measuring rate in miles per hour, and we are measuring time in minutes. To make this problem solvable, we need to convert to either miles per minute or convert the time to hours. I'm going to convert the 15 minutes into hours:
15min*\frac{1 hour}{60 min}=\frac{1}{4}hour

Now that all of the units match, we have:
distance=36\frac{mi}{hr}*\frac{1}{4}hr

You can finish from there I'm sure.
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3 years ago
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3 years ago
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Mumz [18]
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4 years ago
Choose the correct graph to fit the equation 3y=2x+3​
Katyanochek1 [597]

Answer:

y = 2/3x + 1    

Step-by-step explanation:

<u>3y = 2x + 3 </u>           Divide all by 3

3       3      3

y = 2/3x + 1           Slope is 2/3

3 0
3 years ago
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