The vertices of DEF are D(-7,-2) E(-6, -6) and F(-1,-1). Find the coordinates of D' after a rotation of 270° about the origin. Write your answer as coordinates
(x, y).

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters .

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost. swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

Acircle has a circumference of 28.36 units what is the diameter of the circle