Evaluate the expression for x = -2, y = 3, z = -4.-5z2
A. 40
B. 80
C. -80
D. 400
Answer: C
Mathematics
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B. 7
C. - 
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Rewrite the expressions with rational exponents as radical expressions, and then solve the equation.(k + 5)1/4 + 7 = 0
A. 
B. 
C. ?
D. 
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Find a least-squares solution of the inconsistent system Ax = b.A = 
, b = 
A. 
+ x4
B. 
+ x4
C. 
+ x4
D. 
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Identify the following as an equation or an expression.18 + 6(x - 3) = 18 - x
A. Expression B. Equation
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