Evaluate.-8.4 - 11.9
A. -3.5
B. 3.5
C. 20.3
D. -20.3
Answer: D
Mathematics
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Solve the special system by substitution. If the system is dependent, write the solution using set-builder notation with the common line expressed in slope-intercept form.
A. {(x, y)|y = -x + 8} B. (8, 0) C. ? D. {(x, y)|y = x - 8}
Mathematics
Find the exact value of the expression without using a calculator.sin 
cos 
- cos 
sin 
A. 1
B. 
C. 
D. 
Mathematics
Solve the problem.Find the sum of the first 5 terms of the geometric sequence 
, 
, 
, . . . .
A. 
B. 
C. 
D. 21
Mathematics
Add or subtract as indicated. Simplify, if necessary.- 
- 
A. 
B. - 
C. - 
D. - 
Mathematics