True or false?The perpendicular bisectors of a triangle are always concurrent.
A. True
B. False
Answer: A
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Find the indicted product and simplify if possible.The area of annulus (washer) is given by 
.
A. 
B. 
C. 
D. 
+ 
Solve the problem.On a cloudy day, Luciane needed to know the height of a window in a building. Luciane positioned a mirror on the ground between herself and the building so that when he looked in the mirror, she saw the window. If the mirror was 22.32 cm from her feet and 
from the base of the building and Luciane's eye was 1.76 m above the ground, how high up on the building was the window located? Round to the nearest meter.
A. 111 m B. 278 m C. 1 m D. 3 m
Solve the problem.A ship travels 84 km on a bearing of 16°, and then travels on a bearing of 106° for 155 km. Find the distance from the starting point to the end of the trip, to the nearest kilometer.
A. 23 km B. 239 km C. 81 km D. 176 km
Perform the indicated operations and simplify the result. Leave the answer in factored form.
- 
A. 
B. - 
C. - 
D. 