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Aliun [14]
3 years ago
14

Which is the equation for a line that passes through the points (8,2) and (-7,2)

Mathematics
1 answer:
MrMuchimi3 years ago
3 1

Answer:

slope intercept form is y=2

Step-by-step explanation:

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How do I do this? Please help!
const2013 [10]

I already answered this question, if you look back in your questions you should find this answered along with another one. I'll do it again just in case you don't find it.

Answer:

{y,x} = {-4,-2}

Expanation:

Solve by Substitution :

// Solve equation [1] for the variable  y

 [1]    y = 2x

// Plug this in for variable  y  in equation [2]

  [2]    -2•(2x) - 8x = 24

  [2]     - 12x = 24

// Solve equation [2] for the variable  x

  [2]    12x = - 24

  [2]    x = - 2

// By now we know this much :

   y = 2x

   x = -2

// Use the  x  value to solve for  y

   y = 2(-2) = -4

8 0
2 years ago
Find the value of x 2-x7=25
o-na [289]

Answer: 3.285714286

Step-by-step explanation: subtract 2 from both sides then divide by 7

4 0
3 years ago
In the supply-and-demand schedule shown above, the equilibrium price for portable music players is _____.
ad-work [718]
$150 because the supply number is equivalent to the demand number
6 0
3 years ago
Read 2 more answers
A sample of 10 adult elephants had an average weight of 12,556 pounds. The standard deviation
kirill [66]

Answer:

The 99% confidence interval of the population mean for the weights of adult elephants is between 12,475 pounds and 12,637 pounds.

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 = 10 - 1 = 9

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 9 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.99}{2} = 0.995. So we have T = 3.25

The margin of error is:

M = T*s = 3.25*25 = 81

In which s is the standard deviation of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 12,556 - 81 = 12,475 pounds

The upper end of the interval is the sample mean added to M. So it is 12,556 + 81 = 12,637 pounds.

The 99% confidence interval of the population mean for the weights of adult elephants is between 12,475 pounds and 12,637 pounds.

6 0
2 years ago
Which relation is a function?<br> Please help
s344n2d4d5 [400]

Answer: the bottom right one

Step-by-step explanation:

you can put your pencil like this   I  and follow the line without two parts touching the line (vertical line test)

8 0
3 years ago
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