Tre is building a fence. He purchased 4 pounds of nails.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

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%)

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?