Explain what 9 represents in each of these numbers

a19
b 91

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement

Aline passes through (1,-5) and(-3,7) write an equation for the line in point slope form rewrite the equation in slope intercept form

How do you write a paragraph proof to prove that the corresponding angles shown are congruent