Simplify the expression. Assume that all variables are positive when they appear.(
+ 
)(
- 
)
A. 12z
B. 12 - 2
C. 12 - 2
D. 12 - z
Answer: D
Mathematics
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Multiply.(2x + 5)2
A. 4x2 + 20x + 25 B. 2x2 + 20x + 25 C. 2x2 + 25 D. 4x2 + 25
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Find a value of k that will make f a probability density function on the indicated interval.f(x) = kx; [2, 4]
A. 
B. 
C. 
D. 
Mathematics
Subtract.0.6661 - 0.326
A. 0.4401 B. 0.3501 C. 0.3391 D. 0.3401
Mathematics
Multiply.0.2(1.9y2 + 2.6y + 30)
A. 0.38y3 + 0.52y2 + 30y B. 2.1y2 + 2.8y + 30 C. 0.38y2 + 2.6y + 30 D. 0.38y2 + 0.52y + 6
Mathematics