A taxi is charging you $1.50 per 500 meters. If you know your destination is 7.1 miles away, how much will the taxi cost you? Th
2 answers:
Answer: The required cost of taxi is $34.3.
Step-by-step explanation: Given that a taxi is charging $1.50 per 500 meters. Our destination is 7.1 miles away and there are 1,609 meters in a mile.
We have to find the cost of taxi.
We have
1 mile = 1609 meters.
So, 7.1 miles = 7.1 × 1609 = 11423.9 meters.
We will be using the UNITARY method to solve the remaining problem.
We have
Cost of taxi for 500 meters = $1.50.
So, the cost of taxi for 1 meter will be
Therefore, the cost of taxi for 11423.9 meters is given by
Rounding off to the nearest tenth, we get that the cost of taxi is $34.3.
Thus, the required cost of taxi is $34.3.
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Answer:
The 90% confidence interval for the mean nicotine content of this brand of cigarette is between 20.3 milligrams and 30.3 milligrams.
Step-by-step explanation:
We have the standard deviation for the sample, so we use the t-distribution 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 = 9 - 1 = 8
90% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 8 degrees of freedom(y-axis) and a confidence level of . So we have T = 1.8595
The margin of error is:
M = T*s = 1.8595*2.7 = 5
In which s is the standard deviation of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 25.3 - 5 = 20.3 milligrams
The upper end of the interval is the sample mean added to M. So it is 25.3 + 5 = 30.3 milligrams.
The 90% confidence interval for the mean nicotine content of this brand of cigarette is between 20.3 milligrams and 30.3 milligrams.
Step-by-step explanation:
your answer would be the second light blue one
(2h+1)(h+3) x=-1/2,-5
