Find the sum of the series.
A. 119
B. 48
C. 130
D. 80
Answer: A
Mathematics
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Find the solution to the quadratic equation, if they exist.
Mathematics
The circumference of a circle is given by 
where 
is the radius of the circle. What is the circumference of a circle with a 6-in. radius?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve the linear system by using an inverse matrix.
A. {(-1, 6, 2)} B. {(1, 5, 6)} C. {(1, 6, 5)} D. ?
Mathematics
Use a graphing calculator to solve the system of equations. Round your solutions to one decimal place.1.8x + 2.8y - 5.0z = 4.24.7x - 6.7y + 0.7z = -2.33.2x - 4.5y + 3.8z = 8.2
A. {(17.8, 15.1, 11.5)} B. {(22.2, 18.8, 14.3)} C. {(8.9, 7.5, 5.7)} D. {(4.4, 3.8, 2.9)}
Mathematics