The area of a rectangle is 84 in.² the length of the rectangle is 2 inches longer than twice the width. find the width and the perimeter of the rectangle.

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?