Solve the equation.
+ 8 = 10
A. 
B. 
C. ?
D. {6}
Answer: B
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Solve the system by the substitution method.x2 + y2 = 41x + y = 9
A. {(5, 4), (4, 5)} B. {(-5, -4), (-4, -5)} C. {(5, -4), (4, -5)} D. {(-5, 4), (-4, 5)}
In how many ways can a full house of three jacks and two tens be obtained?
Fill in the blank(s) with the appropriate word(s).
?Which of the following are eigenvalues with corresponding eigenvectors for the matrix 
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Express the exercise as a system of linear equations, then find the solution. Use a calculator where appropriate.On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $8 each and a number of necklaces at $10 each. She wrote a check for $1020 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?
A. 95 bracelets and 25 necklaces B. 85 bracelets and 35 necklaces C. 100 bracelets and 20 necklaces D. 90 bracelets and 30 necklaces