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MATH SOLVE
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A candle burned at a steady rate. After 37 minutes, the candle was 11.2 inches tall. Eighteen minutes later, it was 10.75 inches tall. Use an equation in point-slope form to determine the height of the candle after 4 hours. Round the answer to the tenth place if necessary.
General
5 months ago
A mail-order business prides itself in its ability to fill customers' orders in six calendar days or less on the average. Periodically, the operations manager selects a random sample of customer orders and determines the number of days required to fill the orders. Based on this sample information, he decides if the desired standard is not being met. He will assume that the average number of days to fill customers' orders is six or less unless the data suggest strongly otherwise. On one occasion where a sample of 40 customers was selected, the average number of days was 6.65, with a sample standard deviation of 1.5 days. Can the operations manager conclude that his mail-order business is achieving its goal? Use a significance level of 0.025 to answer this question.
General
5 months ago
A CI is desired for the true average stray-load loss μ (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. Assume that stray-load loss is normally distributed with σ = 2.1. (Round your answers to two decimal places.)(a) Compute a 95% CI for μ when N = 25 and sample mean = 58.3.(b) Compute a 95% CI for μ when N = 100 and sample mean = 58.3.
General
5 months ago
Three airlines serve a small town in Ohio. Airline A has 52% of all scheduled flights, airline B has 27% and airline C has the remaining 21%. Their on-time rates are 83%, 66%, and 36%, respectively. A flight just left on-time. What is the probability that it was a flight of airline A?
General
5 months ago
A basketball team is down by 2 points with only a few seconds remaining in the game. There is a 60% chance that the team will be able to make a 2 point shot and tie the game, compared to a 30% chance that it will make a 3 point shot and win. In overtime, the team has a 60% chance of winning. What should the coach do, go for the 2 point shot or the 3 point shot? Be sure to identify any assumptions.Assuming that the outcomes are independent, the coach should have the team go for the 2 point shot. What is the chance of making the 2 point shot and winning overtime?
General
5 months ago
At a certain college, 23% of students speak Spanish, 8% speak Italian, and 3% speak both languages. A student is chosen at random from the college. What is the probability that the student speaks Spanish given that he or she speaks Italian?
General
5 months ago
Find three consecutive integers whose sum is 60.
General
5 months ago
A professor teaches a certain section of material using a lot of examples with sports and cars to illustrate. He is concerned that this may have biased his instruction to favor male students. To test this, he measures exam grades from this section of material among women (n = 10) and men (n = 10). The mean score in the male group was 84 ± 4.0 (M ± SD); in the female group, it was 78 ± 8.0 (M ± SD) points. If the null hypothesis is that there is no difference in exam scores, then test the null hypothesis at a 0.05 level of significance.A.Exam scores were significantly higher in the male group, t(18) = 2.83, p < .05B.Exam scores were the same between groups, t(18) = 2.12, p > .05.C.Exam scores were significantly higher in the male group, t(18) = 2.12, p < .05.D.Exam scores were the same between groups, t(18) = 1.00, p > .05.
General
5 months ago
A consulting firm had predicted that 30% of employees at a large firm would take advantage of a new company Credit Union, but management is skeptical. They felt the rate would be lower. A survey of 250 employees show that 82 of them are currently taking advantage of the Credit Union. Calculate the appropriate test statistic based on this data.
General
5 months ago
A conical tank has height 3 m and radius 2 m at the top. Water flows in at a rate of 1.6m3/min1.6m3/min. How fast is the water level rising when it is 1.11.1 m? (If you use decimal notation, give your answer to at least four decimal places.) The speed of the water level rising is =
General
5 months ago
Raymond just got done jumping at Super Bounce Trampoline Center. The total cost of his session was \$43.25$43.25dollar sign, 43, point, 25. He had to pay a \$7$7dollar sign, 7 entrance fee and \$1.25$1.25dollar sign, 1, point, 25 for every minute he was on the trampoline.Write an equation to determine the number of minutes (t)(t)left parenthesis, t, right parenthesis that Raymond was on the trampoline.
General
5 months ago
I WILL GIVE BRAINLIEST to who answers this question right
General
5 months ago
A music competition on television had five elimination rounds. After each elimination, only half of the contestants were sent to the next round. The table below shows the number of contestants in each round of the competition:x12345f(x)64321684Compute the average rate of change of f(x) from x = 3 to x = 5 and describe what it representsA. −6 contestants per round, and it represents the number of contestants who will reach the final roundB. −28 contestants per round, and it represents the number of contestants who will reach the final roundC. −6 contestants per round, and it represents the average rate at which the number of contestants decreased from the third round to the fifth roundD. −28 contestants per round, and it represents the average rate at which the number of contestants decreased from the third round to the fifth round
General
5 months ago
It takes one machine 25 minutes to pick a bale of cotton and another machine 30 minutes to compete the same job. If both machines are used, how long will it take them to pick a bale of cotton?
General
5 months ago
Drag each equation to show if it could be a correct first step to solving the equation 2 (x + 7) = 36._____________________________________| (2 · x) + (2 · 7) = 36 | 2x + 7 = 36 || x + 7 = 18 | 2(x + 7) = 72 || 2x + 14 = 36 | x + 14 = 36 Yes No Not Enough Info
General
5 months ago
The Jensen family took a trip in September. Sally is calculating the gas mileage in miles per gallon for her dads SUV. When he fills the tank ,her dad records the miles on the SUV as 24033. Her dad pays $83.58 I fill up the empty gas tank of the SUV. At the destination, there was a quarter tank of gas left in the vehicle and the miles where recorded as 24,297. Use a ratio equation to determine the gas mileage in miles per gallon for the trip. Round your answer to the nearest whole.
General
5 months ago
There is a step missing from the solution below. Which equation is the missing step? P=17-√0.025x+725=17-√0.025x+78=-√0.025x+7 ?57=0.025x2280= xA. 64=0.025x+49B. 8=0.025x+7C. -8= √0.025x+7D. 64=0.025x+7
General
5 months ago
Beth purchased a computer, and its value depreciated exponentially each year. Beth will sketch a graph of the situation, where x represents the number of years since she purchased the computer, and y represents its value that year.Beth will only sketch the graph in the quadrant or quadrants for which it makes sense to.In which quadrant or quadrants will Beth sketch the graph?1. Quadrants I and IV only2. Quadrant I only3. Quadrants I, II, III, and IV4. Quadrants I and II onlyPlease help, thank you
General
5 months ago
You are selling drinks at the carnival to raise money for your club. You sell lemonade for $2 per cup and orange drinks for $3 per cup. Your sales totaled $240. Let X be the number of cups of lemonade and Y be the number of drinks.
General
5 months ago
Find the second degree Taylor polynomial for f(x)= sqrt(x^2+8) at the number x=1
General
5 months ago
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