Write the complex number in rectangular form.-9(cos 
+ i sin 
)
A. 
+ 
i
B. 
+ 
i
C. 
+ 
i
D. 
+ 
i
Answer: C
Mathematics
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Find an equation of the line tangent to the given curve at the point (a, f(a)). f(x) = 7e4x , a = 0
A. y = -28x + 7 B. y = 7x + 7 C. y = 28x + 7 D. y = 4x + 7
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Solve the problem.The Wellspring Company's fleet of trucks get 20, 9, 16, 13, 19, 12, and 23 miles per gallon. What is the mean miles per gallon for the fleet? Round to the nearest whole number.
A. 19 B. 17 C. 15 D. 16
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Find the reference angle for the given angle.361°
A. 89° B. 1° C. 179° D. 91°
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Evaluate the expression without using a calculator.
a. 
b. 
c. 
d. 64
e. -64
Mathematics