Find the distance around the figure below by using the appropriate formula, if , ,

align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_7e100602c286473eb19cd611d" />, , . Round approximate answers to two decimal places.

?



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A. 15.20 cm

B. 10.74 cm

C. 21.48 cm

D. 14.60 cm

E. 27.77 cm

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Answer: A

Mathematics

Expand.4 

A.  -  + 972 - 324x² + 81x⁴
B.  -  + 486 - 324x² + 81x⁴
C.  -  + 486x - 324x² + 81x⁴
D.  -  + 486 - 324x³ + 81x⁴

Use the Fundamental Counting Principle to solve the problem.A restaurant offers 7 entrees and 11 desserts. In how many ways can a person order a two-course meal?

A. 18 B. 77 C. 20 D. 154

Find the asymptotes of the hyperbola. -  = 1

A. y + 2 = (x - 1) and y + 2 = - (x - 1)
B. y + 2 = (x - 1) and y + 2 = - (x - 1)
C. y = (x - 1) and y = - (x - 1)
D. y - 1 = (x + 2) and y - 1 = - (x + 2)

Solve the equation on the interval 0 ? ? < 2?.cos2 ? + 2 cos ? + 1 = 0

A. , 
B. ?
C. 2?
D. ,