Solve the problem by writing an appropriate system of equations and using the inverse of the coefficient matrix to solve the system.The largest angle of a triangle is 6 times the smallest angle and it is 3 times the other angle. Find the measure of the smallest angle.
A. 40°
B. 10°
C. 20°
D. 30°
Answer: C
Mathematics
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Simplify the expression.
A. 3z - 5 B. 3z - 40 C. 3z + 5 D. 24z - 5
Mathematics
Find the moment or center of mass of the wire, as indicated.Find the center of mass of a wire that lies along the semicircle y = 
if the density of the wire is 
A. 
= 
?, 
= 
?
B. 
= 0, 
= 
?
C. 
= 0, 
= 
?
D. 
= 
?, 
= 
?
Mathematics
Evaluate the sum.
A. 8 B. 14 C. 30 D. 22
Mathematics
Find the difference.- 
- 
A. - 
B. - 
C. - 1
D. 
Mathematics