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Elden [556K]
3 years ago
5

What property does the statement show? (4x8)x3=(8x4)x3

Mathematics
1 answer:
8090 [49]3 years ago
6 0
Why not? Because every math system you've ever worked with has obeyed these properties! You have never dealt with a system where a×b did not in fact equal b×a, for instance, or where (a×b)×c did not equal a×(b×c). Which is why the properties probably seem somewhat pointless to you. Don't worry about their "relevance" for now; just make sure you can keep the properties straight so you can pass the next test. The lesson below explains how I kept track of the properties.
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A researcher took a random sample of 100 students from a large university. She computed a 95% confidence interval to estimate th
katen-ka-za [31]

Answer:

Part (A): The correct option is true.

Part (B): The null and alternative hypothesis should be:

H_o: \mu =0 ; H_a:\mu \neq0

Step-by-step explanation:

Consider the provided information.

Part (A)

A random sample of 100 students from a large university.

Increasing the sample size decreases the confidence intervals, as it increases the standard error.

If the researcher increase the sample size to 150 which is greater than 100 that will decrease the confidence intervals or the researcher could produce a narrower confidence interval.

Hence, the correct option is true.

Part (B)

The researcher wants to identify that whether there is any significant difference between the measurement of the blood pressure.

Therefore, the null and alternative hypothesis should be:

H_o: \mu =0 ; H_a:\mu \neq0

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3 years ago
The angles of a triangle are 30º, 60º, and xº. What is the value of x? x =
FinnZ [79.3K]
The answer is 30 degrees
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Find the coordinates of the midpoint of the segment whose endpoints are H(5, 13) and K(7, 5).
guapka [62]
Coordinates of mid point=(x1+x2/2 , y1+y2/2)
=(5+7/2 , 13+5/2)
=(12/2 , 18/2)
=(6 , 9)
Use this formula to get coordinates of mid point
here the coordinates of mid point are (6,9)
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3 years ago
An art museum had 275,760 visitors last year. The museum was open every day of the year except for 5 holidays. How many visitors
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Answer:766 people on average because 275,760 divided 360 because 365=1 year 365-5=360 and 275760/360=766

Step-by-step explanation:

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PLEASE LEND ME A HAND! I NEED IT BADLY!!!
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Answer:

The first one is A

The second one is B

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