Find the solution set of the system by graphing the equations by hand. If the system is inconsistent or dependent, say so.3x + y = 1012x + 4y = 40
A. (0, 10)
B. (5, -5)
C. all points on the line 3x + y = 10; dependent system
D. empty set; inconsistent system
Answer: C
Mathematics
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Solve the system of equations using the inverse of the coefficient matrix.x + 3y = -8 21x + 6y = 3
A. x = 3, y = -1 B. x = -1, y = 3 C. x = 1, y = -3 D. x = -3, y = 1
Mathematics
Solve the problem.Use the sequence of equations to find the unknown sum.1 = 11 + 3 = 41 + 3 + 5 = 9 . . . . . . . . . 1 + 3 + 5 + . . . + 1201 = ?
A. 76,176 B. 361,201 C. 90,601 D. 89,975
Mathematics
Divide.
A. 30 B. 31 R 8 C. 30 R 10 D. 31 R 5
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Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
Mathematics