If you want to find “x” you would need to isolated isolate the variable “x”. You do This by doing the inverse operation of the equation.
For example,
If you add 39 you’ll subtract 39.
But in this case ask yourself,
What variable do I want?
In this case it’s “x”
What is stopping “x” form being by itself?
Then do the inverse operation to get rid of what stopping x form being by itself.
If you don’t want x I’m sorry I wasn’t of help.
If you graph 4 separate triangles with the four different points, only (2,3) and (1,5) form a right triangle.
Answer:
1.39/1
Step-by-step explanation:
the answer can be explained by dividing the distance covered by thebiker to the number of laps covered by the same. This gives us the ratio of distance per unti lap for the biker.
11.12 miles divided by 8 gives us= 1.39
Answer:
B. the matched pairs t test.
Step-by-step explanation:
A paired t-test is used to compare two population means where you have two samples in which observations in one sample can be paired with observations in the other sample. For example if we have Before-and-after observations (This problem) we can use it.
Let put some notation
x=first test value , y = second test value
x: 920, 830, 960, 910
y: 1010, 800, 1000, 980
The system of hypothesis for this case are:
Null hypothesis:
Alternative hypothesis:
The first step is calculate the difference
and we obtain this:
d: 90, -30, 40, 70
The second step is calculate the mean difference
The third step would be calculate the standard deviation for the differences, and we got:
The 4 step is calculate the statistic given by :
The next step is calculate the degrees of freedom given by:
Now we can calculate the p value, since we have a right tailed test the p value is given by:
So the p value is higher than any significance level assumed (0.05), so then we can conclude that we reject the null hypothesis. So we can conclude that the difference between the after and the initial score it's not significantly higher at 5% of significance.