There are six rows of 18 chairs and in the middle of four rows of six chairs are brown how many are not brown

True or false look at the picture pls : /

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)