Find the magnitude R of an earthquake of intensity 
.
?
?
A. 3.20
B. 5.20
C. 4.20
D. 2.20
E. 6.20
Answer: C
Mathematics
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Find the exact value of the expression.cos 
sin 
- cos 
sin 
A. 
B. 
C. 
D. 1
Mathematics
Graph the fraction on a number line.
A. 
B. 
C. 
D. 
Mathematics
Multiply.(2x + 9y)2
A. 2x2 + 36xy + 81y2 B. 4x2 + 81y2 C. 4x2 + 36xy + 81y2 D. 2x2 + 81y2
Mathematics
Solve and check. Begin by using the addition or multiplication principles of equality to isolate the squared term. 36x2 = 9
A. 
B. ± 
C. 
D. ± 
Mathematics