Evaluate: -19 - (-20)

question 13

Multiple Choice

Evaluate: -19 - (-20)

• A) -39
• B) 39
• C) -1
• D) 1
• E) -380

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Definitions:

Focus

A point used in the definition of a curve or shape, such as an ellipse or parabola, that helps determine its form.

Ellipse

A curve on a plane surrounding two focal points such that the sum of the distances to the two focal points is constant for every point on the curve.

Vertices

Vertices are the plural of vertex, referring to the corner points where two or more lines, edges, or rays meet in geometric shapes.

Co-vertices

Points on an ellipse or hyperbola that lie at the end of the minor axis.