Which of the following are the measurements of the sides of a right triangle?
a. 7, 14, 16
b. 6.2, 13.8, 20
c. 10, 11, 13
d. 9, 12, 15

Don't know how to find x given these segment lengths

Which shows the correct substitution of the values a, b and c from the equation 1=-2x+3x^2+1

Me with geometry ! in this figure, bc is a perpendicular bisects of kj. dm is the angle bisects of bdj. what is the measure of bdm? •60° •90° •30° •45°