Tell whether each statement is sometimes, always, or never true. Support your answer with a sketch. If two rays share a common endpoint, then they form a line.

Express the rational function as a sum or difference of two simpler rational expressions. $\frac{x}{x^{2}-4}$

Decide whether each statement is always true, sometimes true, or never true. Justify your answers. a) Two line segments with the same midpoint have the same length. b) Two parallel line segments have the same midpoint. c) The midpoint of a line segment is the only point that divides it into two equal parts. d) A point equidistant from the endpoints of a line segment is the midpoint of the line segment.

Write the Hindu -Arabic numeral as an Ionic Greek numeral. 773

Sketch a figure that shows each of the following. Three coplanar lines that intersect in three different points

Tell whether each statement is sometimes, always, or never true. Support your answer with a sketch. If two planes intersect, they intersect in a straight line.

A bottle contains a label stating that it contains Spring Valley pills with 500 mg of vitamin C, and another bottle contains a label stating that it contains Bayer pills with 325 mg of aspirin . When testing claims about the mean contents of the pills, which would have more serious implications: rejection of the Spring Valley vitamin C claim or rejection of the Bayer aspirin claim? Is it wise to use the same significance level for hypothesis tests about the mean amount of vitamin C and the mean amount of aspirin?

Sketch a figure that shows each of the following. a line that intersects two nonintersecting planes

Draw and label each of the following. a ray with endpoints F that passes through G

Is it possible to draw three points that are noncoplanar? What about drawing four points?

What are two rays that share an endpoint?

Draw and label each of the following. a ray with endpoint F that passes through G

Draw and label each of the following. a pair of opposite rays that both contain R

A hollow cylinder, a uniform solid sphere, and a uniform solid cylinder all have the same mass m. The three objects are rolling on a horizontal surface with identical traslational speed v. Find their total kinetic energies in terms of m and v and order them from smallest to largest.