"a nonagon is a nine-sided polygon." if this statement is true, then which of the following statements must also be true? a. a polygon is not a nonagon if and only if it has nine sides. b. a polygon is a nonagon if and only if it does not has nine sides. c. a polygon has 9 sides if and only if it is not a nonogon. d. a polygon is a nonagon if and only if it has nine sides.

Plzzz i beg u so much asap ! what is the slope of this line? enter your answer in the box.

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

Triangle xyz, with vertices x(-2, 0), y(-2, -1), and z(-5, -2), undergoes a transformation to form triangle x? y? z? , with vertices x? (4, -2), y? (4, -3), and z? (1, -4). the type of transformation that triangle xyz undergoes is a . triangle x? y? z? then undergoes a transformation to form triangle x? y? z? , with vertices x? (4, 2), y? (4, 3), and z? (1, 4). the type of transformation that triangle x? y? z? undergoes is a .