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1) A Batch of 40 good workpieces is to be produced using a sand casting process with a starting material thatcosts $40 a piece. The time it takes to fill the mold is 10 seconds, while the solidification time is 1minute. The casting is removed from the sand mold in 5 seconds. The sand used to make the mold costs $100 and can be used to make 100 molds before it needs to be replaced by new sand. Making the moldwill take 20 minutes. Neglecting the melting process and assuming 5% scrap rate, then determine:
a) The production rate of the casting process.
b) The cost of each produce part given that• the hourly wage rate of the operator = $100/hr, and the applicable labor overhead rate =60%, and• the hourly equipment cost rate = $20/hr; which includes overhead.
What is the present value of the cash flows? (Do not round intermediate calculations and round your final answer to 2 decimal places.
use slope-intercept form to create a graph that shows these earnings and estimate the company's earnings for the next year if the compnay continues to grow at the same rate?
It took a small plan 1 hour longer to fly 480 miles against the wind than it took the plane to fly the same distance with the wind. If the wind speed was 20 mph, then what is the speed of the plane in calm air?
How much dinitrogen pentoxide will remain after 30 minutes? How long will it take until 0.01 M of dinitrogen pentoxide remains?
A man 6 ft tall walks at a rate of 5 ft/s away from a lamppost that is 23 ft high. At what rate is the length of his shadow changing when he is 60 ft away from the lamppost?
89 students found that 22% were in favor of raising tution to build a new math building. The standard deviation of this poll is 7%. What would be the standard deviation if the sample size were increased from 89 to 189?
What radius produces such a disk?
an employee's new salary is $20,370 after getting a 5% raise. What was the salary before the increase in pay? Last years salary was $
U.C.L.A. states that at least 40% of the students live on campus. From a sample of 250 students, 90 live on campus. Does this sample provide evidence that fewer than 40% live on campus? Conduct the test with a=0.01.
Are all linear equations functions? Is there an instance when a linear equation is not a function? Support your answer.
the manager of 100 apartments knows that at $600 rent per month, all apartments will be rented. For each $25 increase, one apartment will not be occupied. Let x represnt the number of $25 increases to the rent. Write the revenue as function of x.
A rectangular package to be sent by the U.S. Postal Service can have a maximum combined length and girth (perimeter of a cross section) of 180 inches.
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