Solve the problem.Show that sin(sin-1v - cos-1v) = 2v2 - 1
What will be an ideal response?
sin(sin-1v - cos-1v) 
= v2 - (1 - v2) = 2v2 - 1
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Solve the problem.Cindy wants to secure sequins on a piece of felt shaped like a trapezoid with a height of 11 cm and bases of 20 cm and 14 cm. What is the cost of all the sequins if sequins cost $0.70 per cm2 of coverage?
A. $31.50 B. $151.90 C. $130.90 D. $39.20
Fill in the missing numbers.
A. 
B. 
C. 
D. 
Postal regulations specify that a parcel sent by parcel post may have a combined length and girth of no more than 90 in.
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Find the dimensions of a rectangular package that has a square cross section and the largest volume that may be sent through the mail. Hint: The length plus the girth is 
(see the figure).
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Dimensions: _____ x _____ x _____
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?
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What is the volume of such a package?
?
What will be an ideal response?
Simplify.
A. 0 B. -91 C. 91 D. 182