Solve by the substitution method.-0.5x - 0.1y = -2.60.1x - 0.5y = -2.6
A. ?
B. {(4, 6)}
C. {(7.3, 10.5)}
D. {(3.4, 8.3)}
Answer: B
Mathematics
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Solve by the elimination method. 7x + 8y = 51 3x + 5y = 25
A. No solution B. {(5, 3)} C. {(5, 2)} D. {(4, 3)}
Mathematics
Provide an appropriate response.An employer must match an employee's social security contributions. If the weekly payroll is $27,542 and the FICA rate is 7.65%, what are the employer's contributions? (All employees' year-to-date salaries were under the minimum salary subject to the FICA tax.)
Fill in the blank(s) with the appropriate word(s).
Mathematics
Evaluate the expression.tan-1 
A. 0
B. - 
C. - 
D. undefined
Mathematics
A welder has two pieces of half-inch pipe, one of length 
ft and another of length 
ft. What is the total length of the two welded together?
A. 
ft
B. 
ft
C. 
ft
D. 
ft
E. 
ft
Mathematics