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ankoles [38]
3 years ago
12

A principal is organizing a field trip for more than 300 students. She has already arranged the transportation for 220 students.

Each school bus has the capacity to transport 40 students. Which of the following inequalities could be used to solve for x, the number of school buses still needed to transport all of the students?
A. 40x - 220 > 300
B. 40x + 220 > 300
C. 40x > 520
D. 40x > 300
Mathematics
2 answers:
chubhunter [2.5K]3 years ago
6 0

Answer:

B is your answer llsls

Step-by-step explanation:

jejdjdhd

lina2011 [118]3 years ago
5 0
B..I can’t explain it tho cause I’m horrible at explaining
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seraphim [82]
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Replace x=100 in C(x) and solve:
C(100)=3.5*100+1200=1550
Part B: Replace C(x) by 1900 and solve for x from the given equation:
1900=3.5x+1200
3.5x=1900-1200
x=700/3.5= 200
Part C: the statement C(20)=1270 means that 1270 is the cost for printing 20 books.
Part E: C(40.5)=1341.75 I think this statement is incorrect given the context because x means number of books to print so this value must be an integer number.
8 0
3 years ago
A study of 25 graduates of 4-year public colleges revealed the mean amount owed by a student in student loans was $55,051. The s
Harman [31]

Answer:

Step 1

The data represent amount.

A 90% confidence interval for the population mean is,

First, compute t-critical value then find confidence interval.

The t critical value for the 90% confidence interval is,

The sample size is small and two-tailed test. Look in the column headed and the row headed in the t distribution table by using degree of freedom is,

The t critical value for the 90% confidence interval is 1.711.

A 90% confidence interval for the population mean is .

Step 2

It is reasonable to conclude that mean of the population is actually $55000 due to a 90% confidence intrerval for population mean is between $52461.23 and $57640.77 does include $55000.

The data represent amount.

A 90% confidence interval for the population mean is,

First, compute t-critical value then find confidence interval.

The t critical value for the 90% confidence interval is,

The sample size is small and two-tailed test. Look in the column headed and the row headed in the t distribution table by using degree of freedom is,

The t critical value for the 90% confidence interval is 1.711.

A 90% confidence interval for the population mean is .

It is reasonable to conclude that mean of the population is actually $55000 due to a 90% confidence intrerval for population mean is between $52461.23 and $57640.77 does include $55000.

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2 years ago
A bag has 4 red balls and 4 balls, what is the probability of getting a red ball randomly. ​
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Answer:

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Step-by-step explanation:

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sp2606 [1]

Answer:

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Step-by-step explanation:

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