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Alex777 [14]
2 years ago
12

What is the area of the obtuse triangle below?

Mathematics
1 answer:
tekilochka [14]2 years ago
4 0
D cause that’s the answer
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Students in a statistics class are conducting a survey to estimate the mean number of units students at their college are enroll
Papessa [141]

Answer:

The 95% confidence interval for the average number of units that students in their college are enrolled in is between 11.7 and 12.5 units.

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 = 45 - 1 = 44

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 44 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2\frac{1.5}{\sqrt{45}} = 0.4

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 12.1 - 0.4 = 11.7 units

The upper end of the interval is the sample mean added to M. So it is 12.1 + 0.4 = 12.5 units

The 95% confidence interval for the average number of units that students in their college are enrolled in is between 11.7 and 12.5 units.

8 0
2 years ago
Darnell’s team scored 40 points at the game. Darnell scored 15% of the team’s points. How many points did Darnell score?
Lina20 [59]
Answer: 6 points

Work:
15/100=0.15
40•0.15=6
7 0
2 years ago
Write 4% as a reduced fraction and as a decimal
grandymaker [24]
The answer is 0.04
All you have to do is go to a calculator and type 4 then put %
5 0
3 years ago
How many of each number are there 2, 13, 3, 5, 6, 2, 5, 12, 16, 2, 21, 0, 8, 4, 18, 10, 18, 11, 17, 8, 9, 20, 15, 15, 6, 3, 20,
mars1129 [50]

Answer:

Step-by-step explanation:

4 0
3 years ago
​ <br><br><br><br>​ <br><br> , find f^{-1}(x)f <br><br>−1<br><br> (x)
Stolb23 [73]

Answer:

Multiply the numerator by the reciprocal of the denominator. Multiply x x by 1 1 . Since g(f(x))=x g ( f ( x ) ) = x , f−1(x)=1x f - 1 ( x ) = 1 x is the inverse of f(x)=1x f ( x ) = 1 x .

Step-by-step explanation:

:)

5 0
2 years ago
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