Write two equations for a horizontal line and a vertical line.
1 answer:
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Answer:
standard error = 1.63
Step-by-step explanation:
To calculate the standard error we need to know the standard deviation (σ) and the sample size (n) (see the attached formula).
To obtain the standard deviation we use the given sample variance of 77.4 years:
σ²= variance
Therefore:
σ = √77.4 = 8.8
Now we can calcuate the estimated standard error:
standard error = σ /√n = 8.8/√29 = 1.63
The standard error gives us an estimation about how far the mean of the sample is from the mean of the entire population, and in this case is 1.63.
Both sides need to equal 180 (The side with the 90 degrees measurement and the side with equations). So first subtract 180 from 90
to get the measurement of 5x and you get 90 but we aren't done yet since we need to find x so now we need to divide 5 by 90
and we get 18 which is X.
Now we need to find the measurement of Y. Now both angles on that side together equals 180 so we need this equation.
First, distribute 5(y + 11)
Then you get this equation :
Now, add the two equations together
and you get this equation
Now subtract 45 from both sides
and divide by 9 on both sides
and you get your answer
So
and
to get the measurement of 5x and you get 90 but we aren't done yet since we need to find x so now we need to divide 5 by 90
and we get 18 which is X.
Now we need to find the measurement of Y. Now both angles on that side together equals 180 so we need this equation.
First, distribute 5(y + 11)
Then you get this equation :
Now, add the two equations together
and you get this equation
Now subtract 45 from both sides
and divide by 9 on both sides
and you get your answer
So
and