Solve the problem.Write parametric equations for the tangent line to the curve of intersection of the surfaces    and   at the point  

A.     
B.     
C.     
D.     


Answer: C

Mathematics

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Simplify the expression.

A. - sin2x B. sin x cos2x C. - cos2x D.  sin2x

Mathematics

The figure shows the velocity v or position s of a body moving along a coordinate line as a function of time t . Use the figure to answer the question. v (ft/sec)When is the body moving backward?

A. 4 < t < 7 B. 0 < t < 2, 6 < t < 7 C. 0 < t < 4 D. 7 < t < 10

Mathematics

Find the mode for the group of data items. If there is no mode, so state.20, 39, 46, 39, 49, 39, 49

A. 49 B. 46 C. 39 D. 40.1

Mathematics

Refer to right triangle ABC with .

?

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If  and  cm, find b.
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Apply the rules regarding the use of significant digits when determining your answer.
?
__________ cm

Fill in the blank(s) with the appropriate word(s).

Mathematics