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soldi70 [24.7K]
3 years ago
13

Find the following for the function f(x)=3x2+2x−2. (a) f(0) =

Mathematics
1 answer:
sweet [91]3 years ago
3 0

Answer:

-2

Step-by-step explanation:

when x= 0

f(0)= 3*(0)² + 2*0 - 2

= 0 + 0-2

= -2

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Use the quadratic formula to solve for the roots of the following equation.<br> x 2 – 4x + 13 = 0
Artyom0805 [142]
  • Quadratic Formula: x=\frac{-b\pm \sqrt{b^2-4ac}}{2a} , with a = x^2 coefficient, b = x coefficient, and c = constant

With our equation, plug in the values:

x=\frac{4\pm \sqrt{(-4)^2-4*1*13}}{2*1}

Next, solve the exponent and multiplications:

x=\frac{4\pm \sqrt{16-52}}{2}

Next, solve the subtraction:

x=\frac{4\pm \sqrt{-36}}{2}

Next, factor out i (i = √-1):

x=\frac{4\pm \sqrt{36}i}{2}

Next, solve the square root:

x=\frac{4\pm 6i}{2}

Lastly, divide and <u>your answer is:</u>

x=2\pm 3i

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3 years ago
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Kim wants to know how many families in her small neighborhood of 70 homes would participate in a neighborhood sports event. She
tatuchka [14]

Answer:

Yes, this is a valid inference because she took a random sample of the neighborhood.

Step-by-step explanation:

As her survey was non bias and completely random and she found that 15% of the families would participate in the event. She claims that 15% of the neighborhood families would be expected to participate in the sports event. So, yes, this is a valid inference because she took a random sample of the neighborhood.

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Calculate the following absolute value |-1-1+2|-|-1+2|-|-2|
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Answer:

-3

Hope This Helps!

8 0
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The formula of the area of a square is
Vikki [24]

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Step-by-step explanation:

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Write a slope intercept equation for line with the given characteristics m=-3/5 passes through (4,-4)
Ber [7]

Step-by-step explanation:

Hey there!

Given;

Slope (m) = -3/5

And passes through the point(4,-4).

Now; The equation of a line in slope intercept form is y= mx+b.

So, try to bring it in y= mx+b form.

Firstly let's use one-point formula.

(y - y1) = m(x - x1)

Now, keep all values.

(y + 4) =  \frac{ - 3}{5} (x - 4)

Now, simplify to get answer.

5(y + 4) =  - 3(x - 4)

5y + 20 =  - 3x + 12

5y =  - 3x + 12 - 20

5y =  - 3x - 8

y =  \frac{ - 3}{5} x -  \frac{8}{5}

Therefore the equation is y = -3/5x - 8/5.

<em><u>Hop</u></em><em><u>e</u></em><em><u> it</u></em><em><u> helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

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