How many times the volume of the large sphere is the volume of the small sphere?
1
27
1
18
9
3

What number should be added to both sides of the equation to complete this square? x^2-10x=7

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.

Icould really use some with this question.