What is the relationship between 3.0 and 0.3

1. are the triangles similar and if so why? what is the value of x? show your work.

Why do interests rates on loans to be lower in a weak economy than in a strong one

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.