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kompoz [17]
3 years ago
9

I SERIOUSLY NEED HELP HERE!!!!!

Mathematics
1 answer:
Phoenix [80]3 years ago
5 0
The plot of the data and the regression line is shown in the figure below.
The best straight line is
y = 51.0686 + x 0.092x

The correlation coefficient is 0.192.

Answer: b

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The variables x and y have a quadratic relationship. Tripling the value of x causes the value of y to increase by a factor of ni
Lady bird [3.3K]

Answer:

<em>The value of y when x has a value of 9 is 18</em>

Step-by-step explanation:

<u>Functions</u>

The variables x and y are said to have a quadratic relationship. That information is not enough to set up a general equation for both variables.

Furthermore, we know that tripling the value of x causes the value of y to be multiplied by 9. That leads us to establish a proportional equation between them, as follows:

y=kx^2

Where k is an unknown constant.

Let's use the given point (3,2) to find the value of k:

2=k(3)^2

2=9k

Solving for k:

\displaystyle k=\frac{2}{9}

The equation is now:

\displaystyle y=\frac{2}{9}x^2

Now find y when x=9:

\displaystyle y=\frac{2}{9}(9)^2

\displaystyle y=\frac{2}{9}\cdot 81=18

The value of y when x has a value of 9 is 18

3 0
3 years ago
Evaluate using the values given a+ba; use a=-1 and b=-2
Serjik [45]
\begin{gathered} a+ba=a+b\cdot a \\ a=-1,b=-2 \\ \Rightarrow-1+(-2)\cdot(-1)=-1+(2)=1 \\ \Rightarrow a+ba=1 \end{gathered}

Thus, the answer is a+ba=1

5 0
1 year ago
Unit 4 - Linear Functions and Equation
Marina CMI [18]

Answer:

Step-by-step explanation:

fdccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

8 0
3 years ago
What is the area of this triangle?
Makovka662 [10]

Answer:

21 units²

Step-by-step explanation:

A=1/2bh

b=6

h=7

1/2(6)(7)=

1/2(42)=

21 units²

7 0
3 years ago
Helpp im dyingejwnbdfnknaws
erik [133]

Answer:

Step-by-step explanation:

99-96= 3

7 0
3 years ago
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