The figure shows the graph of a function. At the given value of x, does the function appear to be differentiable, continuous but not differentiable, or neither continuous nor differentiable?x = -1

A. Differentiable
B. Continuous but not differentiable
C. Neither continuous nor differentiable


Answer: B

Mathematics

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Give an appropriate answer.Explain the difference between a cluster sample and a stratified sample.

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Find a rectangular equation for the plane curve defined by the parametric equations.x = 5 cos t, y = -2 sin t; 0 ? t ? 2?

A. 4x2 - 25y2 = 100; x ? 5
B. 4x2 + 25y2 = 1; -  ? x ? 
C. 4x2 - 25y2 = 1; x ? 
D. 4x2 + 25y2 = 100; -5 ? x ? 5

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Determine whether the equation defines y as a function of x.y = 7x - 3

A. No B. Yes

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Divide.(y2 + 10y + 25) ÷ (y + 5)

A. +  
B. + 5 
C. - 5 
D. y2 + 5

Mathematics