what are the solutions to the system of equations x^2+y^2=5 y=2x

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.

Describe what moves you could use to create the transformation of the original image shown at right

Which of the following are accepted without proof in a logical system? check all that apply.