Kristy rolled 2 number cubes, each labeled 1-6. She rolled the cube 400 times, added the two nurnbers
showing, and recorded the results. About how many
times should Kristy expect to roll a sum of 8?
A) 50 B) 56 C) 65 D) 70
Please help me

If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?