Find the domain of the Function
g(x)= 4x/xsquared -25

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

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.

Is a square always, sometimes, or never a parallelogram