Solve the linear system by using an inverse matrix.
A. {(-1, 3)}
B. {(-3, 1)}
C. {(1, -3)}
D. {(3, -1)}
Answer: C
You might also like to view...
? is an acute angle and sin ? is given. Use the Pythagorean identity sin2 ? + cos2 ? = 1 to find cos ?.sin ? = 
A. 
B. 
C. 
D. 
Solve the problem.If (a, 3) is a point on the graph of y = 2x - 5, what is a?
A. -4 B. -1 C. 4 D. 1
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
Solve. Round the dollar amount to the nearest penny. Answer with a complete sentence.Karl earns $12.51 per hour at his job. He worked 15 hours last week. Calculate Karl's pay for the week.
A. Karl's pay for the week was $187.60. B. Karl's pay for the week was $186.90. C. Karl's pay for the week was $187.65. D. Karl's pay for the week was $187.02.