Expand. Your answer should be a polynomial in standard form. (x – 4)(x + 7) =​

Need ! easy 6th grade work! i will put as much points as i can! you so much! i’m learning this in math and it’s soo

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?