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Question: WORKER EFFICIENCY An efficiency study conducted for Elektra Electronics showed that the number of Space Commander walkie-talkies assembled by the average worker t hr after starting work at 8 a.m. is given by
N(t) = -t3 + 6t2 + 15t
a. Find the rate at which the average worker will be assembling walkie-talkies t hr after starting work.
b. At what rate will the average worker be assembling walkie-talkies at 10 a.m.? At 11 a.m.?
c. How many walkie-talkies will the average worker assemble between 10 a.m. and 11 a.m.?
If a ring R has a multiplicative identity, then the multiplicative identity is unique.
Why are the concepts of ratio and proportion not introduced in the lower elementary grades?
Find the Tangent, Normal and Binormal vectors at the point (1,0,0) . I have found the value of r prime t to be -sin t, cost (t), -tan (t) and the magnitude of r prime t to be sec(t)
Consider another example where a pack contains 4 blue, 2 red and 3 black pens. If 2 pens are drawn at random from the pack, replaced and then another pen is drawn. What is the probability of drawing 2 blue pens and 1 black pen?
Demand for vacuum cleaners remains constant through the year.
The Bradford Electric Illuminating Company is studying the relationship between kilowatt-hours (thousands) used and the number of rooms in a private single-family residence.
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A stone thrown upward from the top of a 80 ft cliff at 118 ft/sec eventually falls to the beach below. (For this problem take the acceleration due to gravity to be -32 ft/sec; take upwards to be a positive direction.)
Examine the e-mail communication you receive from others. Is there a difference in style among the messages from males and those from females? Is so, how do you explain the difference?
The half life of iodine 124 is 4 days. A technician measured a 40mCi sample of iodine 124. How many half live of iodine 124 occur in 20 days? How much iodine 124 is in the sample 20 days after the technician measures the original sample.
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