Least Common Denominator of 10 and 15 is 30.So 30 might be the denominator.Hope this helped.
Answer:
The appropriate alternative hypothesis if he wanted to substantiate his suspicion would be 
Step-by-step explanation:
At the null hypothesis, we test that the mean is equal to a certain value.
At the alternate hypothesis, we test that the mean is different, less than or more than the mean value tested at the null hypothesis.
The historical U.S. mean unemployment insurance benefit was reported to be $238 per week.
This means that the null hypothesis is:

A researcher in the state of Virginia anticipated that sample data would show evidence that the mean weekly unemployment insurance benefit in Virginia was above the national level.
This means that the alternate hypothesis is:

If l=4w:
l=40, w = 10
40+40+10+10=100cm
anything bigger isn't allowed, so the width is 10cm
It's in the same place as the 3, so the value will be 6,000.
Answer:
sorry
Step-by-step explanation:
Sorry need points