a keycode must have 4 letters followed by 3 numbers. the letters can be any in the alphabet and the numbers can be from 0 to 5 how many combinations are there

What is the point-slope form of the equation for the line with a slope of -2 that passes through (1,4)?

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

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.