Solve the problem.The speed of a stream is 5 mph. If a boat travels 88 mi downstream in the same time that it takes to travel 44 mi upstream, what is the speed of the boat in still water?
A. 10 mph
B. 18 mph
C. 17 mph
D. 15 mph
Answer: D
Mathematics
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Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.
+ 
+ 
+ ... + 
+ ...
A. 
; 4
B. 
; 8
C. 
; 8
D. 
; 4
Mathematics
Write an equation for the parabola.
A. (y + 2)2 = -12(x - 3) B. (x - 3)2 = 12(y + 2) C. (x + 3)2 = -12(y - 2) D. (x + 2)2 = -12(y - 3)
Mathematics
Determine if the complex number belongs to the Mandelbrot set.z = 0.2 + 0.2i
A. Yes B. No
Mathematics
Graph y = f(x) and y = |f(x)| in the standard viewing rectangle. Determine the x-intercept for the graph of y = |f(x)|.y = -0.9x
A. 
x-intercept is 0.
B. 
x-intercept is 0.
C. 
x-intercept is 0.
D. 
x-intercept is 0.
Mathematics