Solve.A plane flies 490 miles with the wind and 310 miles against the wind in the same length of time. If the speed of the wind is 27 mph, what is the speed of the plane in still air?
A. 110 mph
B. 145 mph
C. 120 mph
D. 125 mph
Answer: C
Mathematics
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For the following equation, graph y = f1(x) and y = f2(x) on the same screen on your calculator. From the graphs, make a conjecture as to whether the equation is an identity. If so, prove your conjecture.tan x + cot x = 2 csc 2x
What will be an ideal response?
Mathematics
Use De Moivre's theorem to evaluate the expression. Write the result in standard form.
10
A. - 
- 
i
B. - 
+ 
i
C. 
- 
i
D. 
+ 
i
Mathematics
Simplify the exponential expression.
A. x5y8 B. x5y9 C. x6y9 D. xy9
Mathematics
?Solve for the equation for 
.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics