The floor of a ballroom has an area of 2,470 square feet. If the length of the floor is 65 feet, what is its width?

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

In a right triangle δabc, the length of leg ac = 5 ft and the hypotenuse ab = 13 ft. find: b the length of the angle bisector of angle ∠a.