Solve the problem.Determine whether the ordered triple (2, 9, -4) is a solution of the system of equations.2x - 5y - 9z = -5 x + y + z = 73x - y + 5z = 35
A. No
B. Yes
Answer: A
Mathematics
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Find a formula for the nth term of the sequence.1, - 
, 
, - 
, 
(reciprocals of squares with alternating signs)
A. an = 
B. an = 
C. an = 
D. an = 
Mathematics
Evaluate the integral.
ln 7x dx
A. ln 7x - 
x3 + C
B. 
x3 ln 7x + 
x3 + C
C. 
x3 ln 7x - 
x4 + C
D. 
x3 ln 7x - 
x3 + C
Mathematics
Decide whether or not the arrow diagram defines a function.DomainRange 
A. No B. Yes
Mathematics
For the complex fraction, determine the LCD of all the fractions appearing within the expression.
A. 8x(x + 6)2 B. x(x + 6)(x - 4) C. 8x(x + 6)(x - 4) D. 8x2(x + 6)(x - 4)
Mathematics