Use finger multiplication to do the calculations.
?
?
A. 108
B. 56
C. 6
D. 54
E. 9
Answer: D
Mathematics
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A. - 
B. - 
C. - 
D. - 
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Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
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Find the exact value of the expression.cos (-390°)
A. - 
B. 
C. - 
D. 
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Use I = Prt for simple interest to find the indicated quantity.P = $3000; t = 90 days; I = $105. Find r. (Use 360 days in a year.)
A. 3.5% B. 14.0% C. 9.7% D. 14.2%
Mathematics