What is the slope of the line that passes through the pair of joints? (5,7), (2,1) a. 8/7 b. 2 c. -8/7 d. 1/2 you

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.