A scale diagram of a room is drawn using a scale of 1:50 The length of the room on the scale drawing is 20 cm.
a How long is the actual room?
Give your answer in metres.

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.

How can you find the mean absolute deviation (mad) for this set of data?

Multiply sixth of sixty six by a half of ten show step by step method