Calculate.9 ? 42 + 9 ? 7 - 5( 4 + 9)
A. 196
B. 142
C. 1294
D. 34
Answer: B
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Write the negation of the conditional. Use the fact that the negation of p ? q is p ? ~q.If 7x + 2y > 6, the answer is "Sea."
A. 7x + 2y ? 6 and the answer is not "Sea." B. 7x + 2y > 6 and the answer is not "Sea." C. If 7x + 2y > 6, the answer is not "Sea." D. 7x + 2y > -6 so the answer is not "Sea."
Find the infinite sum accurate to three decimal places.
A. 1.000 B. 0.500 C. 1.500 D. 3.000
Find an equation of variation in which the following are true.y varies jointly as x and z and inversely as the product of w and p, and 
when x = 5, z = 10, 
and 
A. y = 
B. y = 
C. y = 
D. y = 
Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 3x + 5y = -102x + 4y = -6
A. (5, -1) B. (1, -5) C. (-5, 1) D. (-1, 5)