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Lunna [17]
3 years ago
9

What is 46.48 divided by 0.8

Mathematics
1 answer:
denis23 [38]3 years ago
3 0
The answer is 58.1 if you write long division.

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The national average for the number of students per teacher for all U.S. public schools in 15.9. A random sample of 12 school di
Nady [450]

Answer:

The 95% confidence interval for the true mean number of students per teacher is (17.9, 20.5). The lower bound of the interval is above the national average, which means that this estimate is higher than the national average.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used 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 = 12 - 1 = 11

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 11 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.201

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.201\frac{\sqrt{4.41}}{\sqrt{12}} = 1.3

In which s is the standard deviation of the sample(square root of the variance) and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 19.2 - 1.3 = 17.9 students.

The upper end of the interval is the sample mean added to M. So it is 19.2 + 1.3 = 20.5 students

The 95% confidence interval for the true mean number of students per teacher is (17.9, 20.5). The lower bound of the interval is above the national average, which means that this estimate is higher than the national average.

5 0
3 years ago
Question#1 Please simplify..
riadik2000 [5.3K]
Hey there,
6x + 5 (x-2)
6x + 5x - 10
11x - 10

3x - 5 - x + 9 
3x - x - 5 + 9
2x + 4

3a + 5 - 8a + 1
3 (-1) + 5 - 8(-1) + 1
-3 + 5 + 8 + 1
11

Hope this helps :))

<em>~Top♥</em>

5 0
3 years ago
Help please NO LINKS <br> Find the angle
algol [13]

Answer:

x = 50.8°

Step-by-step explanation:

We are given:

1.) Angle x

2.) Side opposite to angle x

3.) Hypotenuse

Therefore to find the angle x, we will use the sin inverse:

<em>Sin(x) = Opposite / Hypotenuse</em>

Sin(x) = 6.2/8

x = Sin⁻¹(6.2/8)

<u>x = 50.8°</u>

Hope this helps!

6 0
3 years ago
While traveling in Canada, a police officer pulls you over for speeding. The posted speed limit is 100
torisob [31]

Answer:

Speeding at 160.934 km/hr

Step-by-step explanation:

1 mile = 1.609344 kilometers

1.609344 * 100 = 160.934 kilometers

8 0
3 years ago
Read 2 more answers
How many times will 1/5 go into 37
Marat540 [252]
1/5 goes into 37 185 times:

37 / (1/5) = 37*(5/1)=185
3 0
4 years ago
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