Solve the problem.Determine whether (-1, -5, -3) is a solution of the systemx - y + z = -3x + y + z = -9x + y - z = 1
A. No
B. Yes
Answer: A
Mathematics
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? = central angle of a circle, r = radius of the circle, s = length of the intercepted arc, 
speed, 
speed, and t = time. Find the missing quantity. Give an exact answer unless otherwise indicated.r = 40 centimeters, s = 13 centimeters, ? = ?
A. 0.225 radian B. 0.325 radian C. 0.425 radian D. 0.525 radian
Mathematics
Solve.An attorney worked on a case for 48 hours and charged his client $24,816. Estimate his hourly rate by rounding his hours worked to the nearest ten and the amount charged to the nearest thousand.
A. $300 B. $500 C. $715 D. $700
Mathematics
Multiply and simplify.
? 3b
A. 
b
B. 
C. 
D. 11b
Mathematics
Use a calculator to find the function value to four decimal places.sin (480°)
A. 0.8660 B. 1.0000 C. 0.5000 D. -0.5000
Mathematics