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Zolol [24]
2 years ago
15

Find the equation of the line

Mathematics
2 answers:
kotegsom [21]2 years ago
7 0
Of the line of what?
Elina [12.6K]2 years ago
3 0
The equation is y = -3x + 5

Slope intercept form is y = mx + b, in this equation m = -3

-3(3) + 5 =
-9 + 5 =
-4
By plugging in the x coordinate it shows the line goes through (3, -4)

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A population is estimated to have a standard deviation of 9. We want to estimate the population mean within 2, with a 99% level
cupoosta [38]

Answer:

The sample required is  n = 135

Step-by-step explanation:

From the question we are told that

     The  standard deviation is  \sigma = 9

      The margin of error is E =  2

     

Given that the confidence level is  99%  then the level of  significance is mathematically evaluated as

         \alpha =  100-99

        \alpha =  1 \%

        \alpha =  0.01

Next we will obtain the critical value  \frac{\alpha }{2} from the normal distribution table(reference  math dot armstrong dot edu) , the value is  

             Z_{\frac{\alpha }{2} } =  Z_{\frac{0.05 }{2} } =  2.58

The  sample size is mathematically represented as

          n = [ \frac{Z_{\frac{\alpha }{2} } *  \sigma }{E} ]^2

substituting values

           n = [ \frac{ 2.58 *  9 }{2} ]^2

            n = 135

3 0
2 years ago
Help meeeeeeeeeeeeeeeee
Inga [223]

Answer:

27

Step-by-step explanation:

The width of the frame is 9. If Marcia needs it to be THREE times as long as it is wide, that would mean she would have to multiply 3 x 9 which equals 27

7 0
3 years ago
Please help im having problem ​
jeka94

Answer:

24

Step-by-step explanation:

Do i need to explain ??????

3 0
2 years ago
In a class of 28 pupils, if 12 are females. Calculate the ratio of males : total
tensa zangetsu [6.8K]

Answer:

16 : 28

Step-by-step explanation:

If 12 out of the 28 pupils are female, we can calculate the number of males by subtracting the number of females from the total number of pupils.

28 - 12 = 16

So, there are 16 males in the class. Now, we know that the ratio of males : total is 16 : 28.

I hope this helps! Have a lovely day!! :)

(brainliest is much appreciated!!)

6 0
2 years ago
Read 2 more answers
Helpp with explanation:
slava [35]

Answer: 5

Step-by-step explanation:

7 0
3 years ago
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