Find the measures of the angles in the congruent triangles.
A. 20°; 127°; 33°
B. 30°; 123°; 27°
C. 20°; 129°; 31°
D. 25°; 122°; 33°
Answer: A
Mathematics
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Solve the problem.Find the center of mass of the region of constant density bounded from above by the sphere 
and from below by the cone 
A. 
= 0, 
= 0, 
= 
(2 + 
)
B. 
= 0, 
= 0, 
= 
(2 + 
)
C. 
= 0, 
= 0, 
= 
(2 + 
)
D. 
= 0, 
= 0, 
= 
(2 + 
)
Mathematics
Use the Venn diagram below to find the number of elements in the region.
n((C ? B) - (A ? B))
A. 15 B. 11 C. 2 D. 5
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The range for this set of numbers: 5ft, 5ft, 5ft, 5ft; is
A. 0ft B. 5ft C. 4 D. none
Mathematics
Find the exact value of the expression.sin 185° cos 65° - cos 185° sin 65°
A. 
B. - 
C. - 
D. 
Mathematics