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erik [133]
3 years ago
9

Identify the function that best models the data.

Mathematics
2 answers:
In-s [12.5K]3 years ago
7 0
The answer you are  looking for is A, I'm a little rusts at these but that should your answer have a good day!
otez555 [7]3 years ago
4 0
Using a graphing calculator with a quadratic regression function, the answer is letter A.
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What is the factored form of x^3 -1
lianna [129]

Answer:

The factored form of x^3 -1 will be:

x^3-1^3=\left(x-1\right)\left(x^2+x+1\right)

Step-by-step explanation:

Given the expression

x^3-1

Rewrite 1 as 1³

=x^3-1^3

\mathrm{Apply\:Difference\:of\:Cubes\:Formula:\:}x^3-y^3=\left(x-y\right)\left(x^2+xy+y^2\right)

x^3-1^3=\left(x-1\right)\left(x^2+x+1\right)

            =\left(x-1\right)\left(x^2+x+1\right)

Thus, the factored form of x^3 -1 will be:

x^3-1^3=\left(x-1\right)\left(x^2+x+1\right)

8 0
3 years ago
Find the value of x. 14 and 15
MAVERICK [17]

Answer:

15) x=62

14) 19

Step-by-step explanation:

8 0
3 years ago
Graph the data in the table below. Which kind of function best models the data? write an equation to model the data.
harina [27]

Answer:

A quadratic function.

y=2.5x^{2}

Step-by-step explanation:

If you plot the points given in the table, you obtain the graph shown in the figure attached.

As you can see, it is a parabola, therefore, the function that best models the data is a quadratic function.

By definition, the parent function of a quadratic function is:

y=x^{2}

You can compress or stretch it in the y-direction by multiplying the function by a constant C:

 y=Cx^{2}

If 0, then the function is compressed.

If C>1, then the function is stretched.

You can find the constant of the function asked as following:

- Substitute x=1 into the parent function to obtain the y-coordinate:

y=(1)^{2}=1

Then the point is (1,1)

- As you can see, with x=1 you obtain y=1 in the parent function, and in the function given in the table when x=1, y=2.5, therefore, the function is multiplied by 2.5. Therefore the constant is:

C=2.5

Then the function is:

y=2.5x^{2}

7 0
3 years ago
Answer question 12 and 13
ale4655 [162]
12) The mistake that Liz made was instead of shading in 5% of the diagram, she shaded in 5 blocks, which is incorrect.
13) You would have to shade in only one block, because 5% of 20 (blocks) is 1.
7 0
2 years ago
Just one more after this I’m done-
katen-ka-za [31]

Answer:

I used cosine rule to find length b

8 0
2 years ago
Read 2 more answers
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