How much time will Alex need to walk to his school, which is 2 1 4 miles away from his house, if he would walk with the speed of 4 1/2 mph

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

Kylie explained that (-4x+9)^2 will result in a difference of squares because (-4x+9)^2 (-4x+9)^2 =(-4x)^2+(9)^2=16x^2+81

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class