which equation would best solve the following problem the height of a triangle is 5 m less than its base. the area of the triangle is 42 m^2. find the length of the base. a. 42=x(x-5) b. 42=1/2(x)(x-5) c.42=x^2-5 d. 42=1/2(x^2-5)

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 of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}

What is the absolute value of the complex number -4-sqrt2i