Solve the problem.A yard in the shape of a square measures 
on each side. A triangular area with a height of 
and a base of 
is dug up for a flower bed. How much yard area is left over?
A. 297 ft2
B. 270 ft2
C. 135 ft2
D. 351 ft2
Answer: A
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Use least common multiple or greatest common divisor to solve the problem.Three taxi cabs make a complete trip from downtown to the airport and back in 15, 33 and 55 minutes, respectively. If all three cabs leave at the same time, what is the shortest time that must pass before they are all together again?
A. 165 minutes B. 1815 minutes C. 495 minutes D. 103 minutes
Find the standard equation of the indicated hyperbola.Vertices at (0, ±6), foci at (0, ±11)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
A building's angle of elevation from a point on the ground 34 m from its base is 31°. Find the height of the building (to the nearest meter). ?
A. 8 m B. 20 m C. 29 m D. 57 m E. 18 m
Express the sum using summation notation.
+ 
+ 
+ ... + 
A. 
B. 
C. 
D. 