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A class is going on a trip to a museum. It costs $750 to rent a bus. Each ticket to the museum costs $12 Write an algebraic expression that represents the cost of the trip for people. Then evaluate this expression for 37people
General
8 months ago
Salaries of 49 college graduates who took a statistics course in college have a mean, x overbar, of $ 65 comma 300. Assuming a standard deviation, sigma, of $17 comma 805, construct a 95% confidence interval for estimating the population mean mu.
General
8 months ago
A random sample of 49 text books purchased at a local bookstore showed an average price of $122 with a population standard deviation of $15. Let u (new) be the true mean cost of a text book sold by this store. Construct a confidence interval with a 90% degree of confidence. Clearly label the following: a. Point estimate b. Critical value, c. Margin of error d. Confidence interval e. Interpretation (confidence statement).
General
8 months ago
Plot the point (3, 2pi/3), given in polar coordinates, and find other polar coordinates (r, θ )of the point for which the following are true. (a) r>0, -2 pi < 0 (b) r < 0, 0 < 2 pi (c) r > 0, 2 pi < 4 pi
General
8 months ago
A manager is interested in determining if the population standard deviation has dropped below 134. Based on a sample of n=27 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.05 significance level. The sample standard deviation is 126. Determine the Null and alternative hypothese
General
8 months ago
Solve the following exponential equation by taking the natural logarithm on both sides. Express the solution in terms of natural logarithms Then. use a calculate obtain a decimal approximation for the solution. e^2 - 4x = 662 What is the solution in terms of natural logarithms? The solution set is { }. (Use a comma to separate answers as needed. Simplify your answer Use integers or fractions for any numbers in expression). What is the decimal approximation for the solution? The solution set is { }. (Use a comma to separate answers as needed. Round to two decimal places as needed.)
General
8 months ago
Please help! Math question 30 points!
General
8 months ago
Through: (-1,-5), slope=3
General
8 months ago
Thomas rents a car for his vacation. the mileage included with the rental is 54 miles. For every mile he drives over 54 miles, he needs to pay $1 4/5. If he drives 69 miles, how much extra does he need to pay?
General
8 months ago
Find the area of a triangle with the given vertices.Part I: Graph the following points on the coordinate grid below.(1, -3), (3, -1), (5, -3)Part II: Find the area of the triangle. Show your work.
General
8 months ago
What are the solutions of 3x2 + 15 = −6x
General
8 months ago
change the decimal 4.1 into a fraction
General
8 months ago
the amount of money A in a acount in which P dollars is invested for 2 years is given by the formula A=P(1+r)^2, where r is the interest rate compounded annually. If an investment of $800 in the account grows to $882 in two years, at what interest rate was it invested
General
8 months ago
What is the value x in the solution to this system equations 3x-5y=22Y=-5x+32
General
8 months ago
You have already traveled 30 miles east and then 30 miles north. To get back to the start, you travel 30 miles west in 1 hour and then 30 miles south in a half hour. What are your average speed and average velocity for the whole rally?
General
8 months ago
Mackenzie purchased a new refrigerator for $350 and a new range top for $300. The store was offering a deal of 25% if both were purchased at the same time. What is the sale price for these items?
General
8 months ago
2. The value of Twitter has been growing exponentially at a rate of 170% a year. If the company was worth $0.5 million in 2009, during what year will Twitter become worth $24 billion?
General
8 months ago
This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part.Consider the equation below.f(x) = 2 sin(x) + 2 cos(x), 0 ≤ x ≤ 2πExercise (a)Find the interval on which f is increasing. Find the interval on which f is decreasing.Exercise (b)Find the local minimum and maximum values of f.Exercise (c)Find the inflection points. Find the interval on which f is concave up. Find the interval on which f is concave down.
General
8 months ago
Carlita has 2 1/2 pounds of turkey, the cherries are 1/4 equal to the turkey, and the chocolate drips are .35 equal to the cherries, how many chocolate drips do Carlita need?Help Carlita!
General
8 months ago
Fiona buys different amounts of gas at $2.25 per gallon she has a graph that shows the amount she should pay as a function of the amount of gas she buys. what constraints are there on the domain of the function?
General
8 months ago
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