Find the real solutions, if any, of the equation. Use the quadratic formula.7x2 = -12x - 3
A. 
B. 
C. 
D. 
Answer: A
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Simplify.(4x2 - xy - y2) + (x2 + 9xy + 11y2)
A. 5x2 + 8xy + 10y2 B. 3x2 - 10xy - 12y2 C. 5x2 + 10xy + 12y2 D. 4x2 + 9xy + 11y2
Find the probability.The table lists the eight possible blood types. Also given is the percent of the U.S. population having that type.
Let E be the event that a randomly selected person in the U. S. has type B blood. Let F be the event that a randomly selected person in the U. S. has RH-positive blood.Find P(F|E).
A. 0.818 B. 0.340 C. 0.720 D. 0.107
Simplify the algebraic expression, or state that the expression cannot be simplified.3x9 + 8x3
A. 11x9 B. cannot be simplified C. 11x18 D. 99x
Solve the problem.A water tank can be filled in 7 minutes and emptied in 8 minutes. If the drain is accidentally left open when the tank is being filled, how long does it take to fill the tank?
A. 
min
B. 
min
C. 
min
D. 56 min