Multiply and simplify.( + )( - )

A. 1
B. 12 + 2
C. 23
D. 12 - 4


Answer: A

Mathematics

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Solve the application problem.A ball is thrown vertically upward from the top of a building that is 112 feet tall. The ball's height above the ground after t seconds is given by  After how many seconds will the ball pass the top of the building on its way down?

A. 5 sec B. 6 sec C. 8 sec D. 112 sec

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Perform the indicated operation.40 lb 15 oz - 6 lb 3 oz

A. 34 lb 12 oz B. 47 lb 2 oz C. 46 lb 2 oz D. 33 lb 12 oz

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Find using the appropriate Chain Rule for where and

data-wiris-created="true" src="https://sciemce.com/media/2/ppg__cognero__Section_13.5__media__4f83545c-a3f1-45d9-b45e-e49ffdd672bd.PNG" style="vertical-align:middle;" />, and evaluate the partial derivative at and . If necessary, round your answer to two decimal places.
?

A. 24,303.73
B. 16,203.59
C. 24,306.68
D. 16,203.22
E. 24,290.22

Mathematics