Solve the problem.A boat moves 7 kilometers upstream in the same amount of time it moves 20 kilometers downstream. If the rate of the current is 5 kilometers per hour, find the rate of the boat in still water.
A. 5 km/hr
B. 2
km/hr
C. 10
km/hr
D. 10
km/hr
Answer: D
Mathematics
You might also like to view...
Sketch the curve.x2 + 2y2 = 100
A. 
B. 
C. 
D. 
Mathematics
Find the Taylor polynomial of order 3 centered at 0.f(x) = 
A. p3(x) = 
- 
+ 
- 
B. p3(x) = 
+ 
+ 
+ 
C. p3(x) = 
+ 
+ 
+ 
D. p3(x) = 
- 
+ 
- 
Mathematics
Expand.(x-3 + 4x3)5
A. 
+ 
+ 
+ 640x3 + 1280x9 + 2x15
B. 
+ 
+ 
+ 10x3 + 1280x9 + 1024x15
C. 
+ 
+ 
+ 640x3 + 1280x9 + 1024x15
D. 
+ 
+ 
+ 640x3 + 5x9 + 1024x15
Mathematics
Determine between which two consecutive whole numbers each square root lies.
A. 8 and 9 B. 9 and 10 C. 7 and 8 D. 10 and 11
Mathematics