The area of a rectangle is 42 square meters. The length is 7 meters. What is the width?

Solve the system of equations. y= 2x y= x^2 - 15

1foot = 12 inches; 1 yard = 3 feet

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.