What equation results from completing the square and then factoring? x2 + 6x= 13
A. (X+3)^2=4
B. (X+9)^2=22
C. (X+9)^2=4
D. (X+9)^2=4

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

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft.what is the area of the stage? enter your answer in the box. ft²

What are the triple angle formulas? is it related to double angle identities?