Solve the problem.A bag contains 8 red marbles, 5 blue marbles, and 2 green marbles. If one marble is selected at random, determine the probability that it is blue.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)2.6x - 0.7y + 5.3z - 3.4w = 2.96.5y + 0.7w = -1.84.0z - 2.2w = 1.54.9x + 0.6w = 3.2
A. {(-0.5, -0.4, 1.1, 9.4)} B. {(0.5, -0.4, 1.1, 1.3)} C. {(0.5, 0.4, 1.1, -6.3)} D. {(0.5, -0.4, -0.3, -1.3)}
Mathematics
Perform the operation and give the answer as a fraction in lowest terms.
÷ 
A. - 
B. - 
C. - 
D. 
Mathematics
Express the complex number in trigonometric form.- 5 + 5i
A. 5
B. 5
C. 5
D. 5
Mathematics
Use the given trigonometric function value of ? to find the requested trigonometric function value of the acute angle ?. Rationalize the denominators where necessary.cos ? = 
Find sec ?.
A. 
B. 
C. 
D. 
Mathematics