Rationalize the denominator.
A. 
B. 10
- 20
C. 10
- 2
D. 10
+ 20
Answer: B
Mathematics
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Convert.0.651 dekameter = _____ centimeters
A. 6.51 B. 65.1 C. 651 D. 6510
Mathematics
Use a system of equations to find the parabola of the form 
that goes through the three given points.
, 
, 
A. y = -3x2 - 5x + 5 B. y = -3x2 + 5x - 5 C. y = -3x2 - 5x - 5 D. y = 3x2 - 5x - 5
Mathematics
Two pipes are used to fill a water storage tank. The first pipe can fill the tank in 18 hours, and the two pipes together can fill the tank in 3 hour(s) less time than the second pipe alone. How long would it take for the second pipe to fill the tank? ? Please enter your answer without the units.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve and write interval notation for the solution set.
> 4
A. 
? 
B. 
C. 
D. 
? 
Mathematics