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nordsb [41]
3 years ago
7

Which triangle congruence is this? SSS SAS AAS ASA HL

Mathematics
1 answer:
Tanzania [10]3 years ago
6 0
Aas i belive . If not consult the other answer
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How many even numbers less than 1000 can be formed from the given
Vinil7 [7]

Answer:

non of them it should be 32 iʻm pretty sure

Step-by-step explanation:

5 0
3 years ago
A random sample of 85 sixth-graders in a large city take a course designed to improve scores on a reading comprehension test. Ba
BartSMP [9]

Answer:

12.6 < \mu < 14.8

For this case we can find the margin of error like this:

ME= \frac{14.8-12.6}{2}= 1.1

Since we need to divide the width of the interval by 2.

And now with the margin of error we can find the sample mean with any of the two following ways:

12.6 +1.1=13.7

14.8-1.1=13.7

So for this case the correct answer would be:

A. Sample Mean = 13.7; Margin of Error = 1.1

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

Solution to the problem

The confidence interval for the mean is given by the following formula:  

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}} (1)  

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:  

df=n-1=85-1=84

We know that the confidence interval is given by:

12.6 < \mu < 14.8

For this case we can find the margin of error like this:

ME= \frac{14.8-12.6}{2}= 1.1

Since we need to divide the width of the interval by 2.

And now with the margin of error we can find the sample mean with any of the two following ways:

12.6 +1.1=13.7

14.8-1.1=13.7

So for this case the correct answer would be:

A. Sample Mean = 13.7; Margin of Error = 1.1

3 0
3 years ago
What is the area of this shape​
Sophie [7]

Answer:

70 in^2.

Step-by-step explanation:

The area of the whole shape = 5 * 14 = 70 in^2.

5 0
3 years ago
Johnny measured the wading pool at the Belleville Community Center and calculated that it has a circumference of 6.28 meters. Wh
Degger [83]

Answer:

your mom

Step-by-step explanation:

im on top she is on the bottom <3

6 0
2 years ago
Which statement best describes f(x)=-2√x-7+1
olga nikolaevna [1]

it is under mapping and function

f of x is equal to -2 root x-7 plus one

6 0
3 years ago
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