Seven bulbs of which four are defective are to be tried in two holders in a dark room. The number of trials the room shall be lighted is
(a) 18
(b) 15
(c) 28 (d) 6​

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.

What percent of the circle below is shaded?