Will give brainliest!

horatio drew a circle with a radius of 6x cm. kelli drew a circle with a radius of 18y cm. what is the scale factor between these two circles?

a. x/3y
b. 2x/3y
c. 1/3
d. 2/3

How do you write a paragraph proof to prove that the corresponding angles shown are congruent

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)