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MATH SOLVE
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General
Suppose that you currently own a clothes dryer that costs $25 per month to operate A new efficient dryer costs $590 and has estimated operating cost of $15 per month. How long will it take for the new dryer to pay for itself? The clothes dryer will pay for itself in _months.
General
4 months ago
EXAMPLE 5 Evaluate the iterated integral 5 0 5 x sin(y2) dy dx. SOLUTION If we try to evaluate the integral as it stands, we are faced with the task of first evaluating sin(y2) dy. But it's impossible to do so in finite terms since sin(y2) dy is not an elementary function. So we must change the order of integration. This is accomplished by first expressing the given iterated integral as a double integral. Using this equation backward, we have 5 0 5 x sin(y2) dy dx
General
4 months ago
(a)A random sample of 10 houses in a particular area, each of which is heated with natural gas, is selected and the amount of gas (therms) used during the month of January is determined for each house. The resulting observations are 138, 145, 99, 125, 144, 103, 109, 89, 122, 118. Let μ denote the average gas usage during January by all houses in this area. Compute a point estimate of μ.(b) Suppose there are 25,000 houses in this area that use natural gas for heating. Let τ denote the total amount of gas used by all of these houses during January. Estimate τ using the data of part (a).therms(c) Use the data in part (a) to estimate p, the proportion of all houses that used at least 100 therms.(d) Give a point estimate of the population median usage (the middle value in the population of all houses) based on the sample of part (a).
General
4 months ago
A class voted for either rollerblading, swimming, or biking as their favoritesummer activity. If rollerblading got 14% percent of the vote and swimminggot 31%, what percentage of the class voted for biking?Help
General
4 months ago
Pedro has a total of 645 cents in dollar bills, dimes, and pennies. Which could be the money that he has?6 one dollar bills, 4 dimes, and 5 pennies6 one dollar bills, 40 dimes, and 5 pennies600 one dollar bills, 4 dimes, and 5 pennies600 one dollar bills, 40 dimes, and 5 pennies
General
4 months ago
A sales representative is given a choice of two paycheck plans. One choice includes a monthly base pay of $300 plus 10% commission on his sales. The second choice is a monthly salary of $1200. For what amount of sales would the representative make more money with the first plan. All I know is this has to do with inequalities. Can someone help me because I honestly don't know.
General
4 months ago
The mean cost of domestic airfares in the United States rose to an all-time high of $385 per ticket (Bureau of Transportation Statistics website, November 2, 2012). Airfares were based on the total ticket value, which consisted of the price charged by the airlines plus any additional taxes and fees. Assume domestic airfares are normally distributed with a standard deviation of $110.a. What is the probability that a domestic airfare is $550 or more (to 4 decimals)?b. What is the probability than a domestic airfare is $250 or less (to 4 decimals)?c. What if the probability that a domestic airfare is between $300 and $500 (to 4 decimals)?d. What is the cost for the 3% highest domestic airfares?
General
4 months ago
The length of time Y necessary to complete a key operation in the construction of houses has an exponential distribution with mean 18 hours. The formula C = 100 + 60Y + 3Y2 relates the cost C of completing this operation to the square of the time to completion. The mean of C was found to be found to be 3,124 hours and the variance of C was found to be 28,460,160. How many standard deviations above the mean is 4,000 hours? (Round your answer to two decimal places.)
General
4 months ago
Identify the statements that explain why this is a binomial experiment. Select all that apply. According to an airline, flights on a certain route are on time 85% of the time. Suppose 24 flights are randomly selected and the number of on-time flights is recorded. (a) Explain why this is a binomial experiment. (b) Find and interpret the probability that exactly 18 flights are on time. (c) Find and interpret the probability that fewer than 18 flights are on time. (d) Find and interpret the probability that at least 18 flights are on time. (e) Find and interpret the probability that between 16 and 18 flights, inclusive, are on time.
General
4 months ago
A test has multiple choice questions with 5 choices for each answer; only one answer is correct for each question.Suppose a student guesses the answer to each question. Assuming the guesses are independent, find the probabilitythat the student will not guess correctly on any one question.OO1/54/5
General
4 months ago
A storeowner places a “No Smoking” sign in front of their store. This would be classified as a type of what factor.
General
4 months ago
in a survey respondents were asked which type of movie they watched most often. the bar graph shows how many males and how many females said they watched each type of movie most often.how many more males said they watched action movies than drama movies2458
General
4 months ago
In the cash now lottery game there are 6 finalists who submitted entry tickets on time. from these 6 tickets, three grand prize winners will be drawn. the first prize is one million dollars, the second prize is one hundred thousand dollars, and the third prize is ten thousand dollars. determine the total number of different ways in which the winners can be drawn. (assume that the tickets are not replaced after they are drawn.)
General
4 months ago
For children between the ages of 18 months and 29 months, there is approximately a linear relationship between height and age. the relationship can be represented by ŷ = 63.80 + 0.61x where y represents height (in centimeters) and x represents age (in months). joseph is 23.5 months old and is 80 centimeters tall. what is joseph's residual?a.78.135b.112.600c.5.865d.1.865e.-32.600 f) none of the above
General
4 months ago
Suppose you have 74 feet of fencing to enclose a rectangular dog pen. The function a=37x-x2, where x = width, gives you the area of the dog pen in square feet. What width gives you the maximum area? What is the maximum area? Round to the nearest tenth as necessary
General
4 months ago
Which algebraic expression is a polynomial with a degree of 2?a)4x3 − 2xb10x2 − c)8x3+ + 3d)6x2 − 6x + 5
General
4 months ago
Given: F = {(0, 1), (2, 4), (4, 6), (6, 8)} and G = {(2, 5), (4, 7), (5, 8), (6, 9), (7, 5)} (F - G) (6) =
General
4 months ago
what is the positive solution to the equation 0=1/3x^2-3
General
4 months ago
raj writes a polynomial expression in standard form using one variable, a, that has 4 terms and is degree 5. Nicole writes a polynomial expression in standard form using one variable, a, that has 3 terms and is degree 2. Raj and Nicole’s polynomial expressions are added to create a sum, written in standard form. What can you determine about the degree of the sum? The sum will be degree . What can you determine about the number of terms of the sum? The maximum number of terms of the sum is , but it could be less.
General
4 months ago
A statement and portions of the flowchart proof of the statement are shown.Which reason should appear in the box labeled 1?Linear Pair PostulateSubstitution Property of EqualityAngle Congruence PostulateRuler Postulate Angle
General
4 months ago
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