Solve the problem.There are 2.292 × 106 miles of highways, roads, and streets in a certain country.Write the number as a decimal number.
A. 229,200
B. 22,920,000
C. 229,200,000
D. 2,292,000
Answer: D
Mathematics
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Form an equivalent expression by rationalizing the denominator.
A. 
B. 130
C. 
D. 9
Mathematics
Find the derivative.y = 
+ 7 sec x
A. y ' = - 
- 7 csc x
B. y ' = - 
+ 7 sec x tan x
C. y ' = - 
+ 7 tan2x
D. y ' = 
- 7 sec x tan x
Mathematics
Sketch an angle ? in standard position such that ? has the least positive measure and the given point is on the terminal side of ?.(-2, -7) 
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation and write the answer in the form 
where a and b are real numbers.(2 - 7i)(8 - 8i)
A. 72 - 40i B. 56i2 - 72i + 16 C. -40 - 72i D. -40 + 72i
Mathematics