Solve the equation. If the solutions involve square roots, give both the exact solutions and the approximate solutions to three decimal places.5k2 - 44k - 9 = 0
A. - 
, 9
B. -5, 9
C. - 
, 5
D. 
, - 
Answer: A
Mathematics
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Find the limit.Let 
f(x) = 5 and 
g(x) = 6.Find 
.
A. 121
B. 11
C. 
D. 
Mathematics
Find the sum.18.92 + 6.322 + 4.549 + 3.68
A. 33.481 B. 33.471 C. 34.471 D. 33.571
Mathematics
? = 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 the problem.Insert parentheses, if needed, so that the expression on the left is equal to the number on the right.8 + 2 ? 42 = 72
A. 8 + (2 ? 42) B. 8 + (2 ? 4)2 C. (8 + 2) ? 42 D. No parentheses needed
Mathematics