Working alone, ryan can dig a 10 ft by 10 ft hole in five hours. castel can dig the same hole in six hours. how long will it take them if they worked together?

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Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs