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grigory [225]
3 years ago
5

If the equation y = 1 3 x + 2 is changed to y = 3x + 2, what will be true about the graph of the equation? A) The graph will shi

ft up 3 units. B) The graph will shift down 3 units. C) The graph will shift left 3 units. D) The slope of the graph will be changed.
Mathematics
1 answer:
MrRa [10]3 years ago
4 0

Answer:

D.

Step-by-step explanation:

The number which multiplies x  is the slope of the graph so 13x becoming  3x means the slope of the graph will change.

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Assume the population has a normal distribution. A sample of 25 randomly selected students Has a mean test score of 81.5 With a
Natasha_Volkova [10]

Answer:

The 90% confidence interval for the mean test score is between 77.29 and 85.71.

Step-by-step explanation:

We have the standard deviation for the sample, so we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 25 - 1 = 24

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 24 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 2.064

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.064\frac{10.2}{\sqrt{25}} = 4.21

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 81.5 - 4.21 = 77.29

The upper end of the interval is the sample mean added to M. So it is 81.5 + 4.21 = 85.71.

The 90% confidence interval for the mean test score is between 77.29 and 85.71.

6 0
3 years ago
2 x 10-6<br> times what number is equal to 6 x 10-4
Dahasolnce [82]

Answer:

times -6

Explanation... 2 x 10-6 x -6=56

                      6 x 10-4=56      

                             

Hope this helps

7 0
3 years ago
Help pls asap<br><br><br><br>-2x(-3x - 4y - 8) =
xenn [34]
-2x*(-3x)-2x*(-4y)-2x*(-8)

answer :6x^2+8xy+16x
3 0
2 years ago
Where are earthquakes most likely to occur?
bonufazy [111]

Most earthquakes occur along the edge of the oceanic and continental plates.  So, when they slide past each other. Many think it's when they pull apart but that has mixed results.

5 0
2 years ago
Using Euler's formula, how many
Nana76 [90]

The number of edges of a polyhedron with 4 faces and 4 vertices will be 6.

<h3>What is a polygon?</h3>

The polygon is a 2D geometry that has a finite number of sides. And all the sides of the polygon are straight lines connected to each other side by side.

Using Euler's formula, the number of the edges does a polyhedron with 4 faces and 4 vertices have

We know the formula for the edges of the polyhedron will be

F + V = E + 2

The number of faces, vertices, and edges of a polyhedron are denoted by the letters F, V, and E.

Then we have

4 + 4 = E + 2

     E = 8 - 2

     E = 6

More about the polygon link is given below.

brainly.com/question/17756657

#SPJ1

7 0
2 years ago
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