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RUDIKE [14]
3 years ago
8

What do I do please help

Mathematics
2 answers:
arlik [135]3 years ago
8 0

Answer:

The answer is y=1x+2

Step-by-step explanation:

Simply count up on both sides. Then take the number of increases between each y value and place it on top of the increase of the x value. Divide. To find the y-intercept, or "b", take the constant of the y and count back until the x is zero. For example, since the chart is consistently going up by 1s on each side, take the first "y" value, 3, and count one back to zero on the x. It is two.

Leto [7]3 years ago
6 0

<u>Answer:</u>

<em>y=1x+2</em>

<u>Explanation:</u>

You use the equation y=mx+b.

Here is how I got my answer

<em>step 1: Find the slope by finding the change in y values and x values </em>

  x  y

  1  3

  2 4

  3 5

  4 6

  5 7

X=+1

Y=+1      you do the change of y over the change of x and get 1/1=1

So far in the equation now you have y=1x+b

Step 2:Solve for the b value by substituting the y and x variable with a value from the table

x y              y=1x+b

1 3               3=1(1)+b-->3=1+b-->3-1=b+1-1-->2=b  

2 4              

3 5

4 6

5 7

Step 3: Plug in all the numbers you got into the equation y=mx+b

y=1x+2

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Find the distance between the points (5, -3) and (0, 2).
ohaa [14]

Answer:

Distance between points  (5, -3) and (0, 2) is √50 or 7.07

Step-by-step explanation:

We need to find distance between two points (5,-3) and (0,2)

The distance formula used is:

d= \sqrt {\left( { x_2-x_1 } \right)^2 + \left( {y_2-y_1} \right)^2 }

here

x₁= 5, y₁=-3, x₂=0 and y₂=2

Putting values in the formula:

d= \sqrt {\left( {x_2-x_1} \right)^2 + \left( {y_2-y_1} \right)^2 }\\d= \sqrt {\left( {0-5} \right)^2 + \left( {2-(-3)} \right)^2 }\\d= \sqrt {\left( {-5} \right)^2 + \left( {2+3} \right)^2 }\\d= \sqrt {25+25}\\d= \sqrt {50}\\d= 7.07

So, distance between points  (5, -3) and (0, 2) is √50 or 7.07

7 0
3 years ago
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help please <br> I need help and, I tried everything it wouldn’t give me no right answer
dem82 [27]
A because it gave me this

3 0
4 years ago
I was wondering if anyone could explain how to solve this?
vfiekz [6]
(a+b)² can also be written as (a+b) (a+b). When you expand this you get a²+2ab+b²

(a-b)² can also be written as (a-b) (a-b). When expanded this gives a²-2ab-b2

As you can see, this leads to different coefficients of the 'ab' values: for (a+B) ² its 2 for (a-b) ² its - 2
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4 years ago
A researcher wishes to estimate with 95% confidence, the proportion of the people who own a home computer. A previous study show
vitfil [10]

Answer:

The minimum sample size necessary is 2305.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

For this problem, we have that:

\pi = 0.4

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The researcher wishes to be accurate within 2% of the true proportion. Find the minimum sample size necessary?

We need a sample size of n.

n is found when M = 0.02. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.02 = 1.96\sqrt{\frac{0.4*0.6}{n}}

0.02\sqrt{n} = 1.96*\sqrt{0.4*0.6}

\sqrt{n} = \frac{1.96*\sqrt{0.4*0.6}}{0.02}

(\sqrt{n})^{2} = (\frac{1.96*\sqrt{0.4*0.6}}{0.02})^{2}

n = 2304.96

Rounding up

The minimum sample size necessary is 2305.

8 0
3 years ago
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