The slope of the line below is -5. Which of the following is the point slope form of the line (2,-7)
1 answer:
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This is a systems of equations.
s = stamp, e = envelope
Substitute e + 9 for s.
.1(e + 9) + .13e = 2.51
Simplify.
.1e + .9 + .13e = 2.51
Simplify.
.14e + .9 = 2.51
Subtract .9 from both sides.
.14e = 1.61
Divide both sides by .14.
e = 11.5
Now, you can input e into the other equation.
11.5 + 9 = s
Simplify.
20.5 = s
s = 20.5, e = 11.5
Using a t-distribution calculator, it is found that the critical value of the test statistic t is .
- The critical value is found using a calculator.
The inputs are:
- The tail.
- The amount of degrees of freedom, which is one less than the sample size.
- The significance level.
In this problem, we have a<u> lower(left-tailed) test, with 10 - 1 = 9 df and a level of significance of 0.1</u>, hence the critical value is .
You can learn more about the t-distribution at brainly.com/question/26062194