First, 126/32 so divide top and bottom by 2
126 / 2 = 63
32/2 = 16
answer
a = 16
and
b = 2
Answer:
x=-21
Step-by-step explanation:
x-7=2x+14
-7=x+14
-21=x
Answer:
54 miles
Step-by-step explanation:
4.5 miles each day except Sunday is 6 days per week
In 2 weeks, she runs 12 days
4.5 miles × 12 = 54 miles
Answer:
[0.9 months, 32.69 months]
Step-by-step explanation:
The mean is
The standard deviation is
Now, we have to find two values a and b such that the area under the Normal curve with mean 16.8 and standard deviation 8.1092 between a and b equals <em>95% = 0.95
</em>
Using a spreadsheet we find these values are
a = 0.906
b = 32.694
<h3>(See picture)
</h3>
and our 95% confidence interval for the mean number of months elapsed since the last visit to a dentist for the population of students participating in the program rounded to two decimal places is
[0.9 months, 32.69 months]