What is the common denominator of 1 / a + 1 / b in the complex fraction 1 / a - 1 / b / 1 / 8 + 1 / b

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Polygon hh is a scaled copy of polygon gg using a scale factor of 1/4. polygon h's area is what fraction of polygon g's area?

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5