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Natalka [10]
3 years ago
10

The function f(x)=3x4−x2+7

Mathematics
1 answer:
Bezzdna [24]3 years ago
7 0

Answer: the answer is c = 29

Step-by-step explanation:

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In an observational study, which of the following refers to a description of how the data are collected and the decisions are ma
ikadub [295]

Answer:

B. Methodology

Step-by-step explanation:

The methodology of anything is how it's done.  In an observational study, methodology would describe how the study is done:  how the data is collected and how decisions are made.

8 0
3 years ago
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Describe how to solve a function by graphing. Is this way always accurate? Is it necessary to learn other methods for solving a
GalinKa [24]
Hello there!

To solve a function by graphing would be to graph it and then look at where it intersects the x-axis. This way is not always accurate due to the fact that one cannot graph it to the exact point all the time, and even if they can or use a graphing calculator, it's difficult to read the graphs too. For those two reasons, solving by graphing throws off the answer most of the time, therefore this method is rarely reliable and it's important to learn other ways to solve.

I really hope this helps!
Best wishes :)
5 0
3 years ago
25x^-4-99x^-2-4=0 <br> How do I solve for this?
OlgaM077 [116]

Given

25x^{-4} - 99x^{-2} - 4 = 0

consider substituting y=x^{-2} to get a proper quadratic equation,

25y^2 - 99y - 4 = 0

Solve for y ; we can factorize to get

(25y + 1) (y - 4) = 0

25y+1 = 0 \text{ or } y - 4 = 0

y = -\dfrac1{25} \text{ or }y = 4

Solve for x :

x^{-2} = -\dfrac1{25} \text{ or }x^{-2} = 4

The first equation has no real solution, since x^{-2} = \frac1{x^2} > 0 for all non-zero x. Proceeding with the second equation, we get

x^{-2} = 4 \implies x^2 = \dfrac14 \implies x = \pm\sqrt{\dfrac14} = \boxed{\pm \dfrac12}

If we want to find all complex solutions, we take i=\sqrt{-1} so that the first equation above would have led us to

x^{-2} = -\dfrac1{25} \implies x^2 = -25 \implies x = \pm\sqrt{-25} = \pm5i

8 0
2 years ago
Use the word BULLDOG to answer the question. If the letters of this word are written on paper and then cut into squares with one
iris [78.8K]
There is a 0% chance of selecting either of those letters as they do not appear in the work BULLDOG. 
8 0
3 years ago
In each equation, select an operation to make the equation true.
I am Lyosha [343]

Answer:

1. x

2. ÷

3. -

4. -

5. ÷

Step-by-step explanation:

1. 24 x 3/4 = 18

2. 24 ÷ -3/4 = -32

3. 12 - 15 = -3

4. 12 - -15 = 27

5. -18 ÷ -3/4 = 24

8 0
3 years ago
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