The matrix is the final matrix form for a system of two linear equations in variables x1 and x2. Write the Solution of the system.
A. x1 = 3
x2 = 5
B. x1 = -5
x2 = -3
C. x1 = 5
x2 = t for any real number t
D. x1 = 5
x2 = 3
Answer: D
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Match to the equivalent expression.
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A. 
B. 
C. 
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In which item of apparel does the store have the smallest investment?
A. Skirts B. Socks C. Lingerie D. Coats
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
Use a truth table to decide if the statements are equivalent.q ? ~p; ~p ? ~q
A. Equivalent B. Not equivalent