Any letter can be used for math. The most common is x, y, z, a, b, & c.
A mathematical property, ~, is said to be transitive over a set S if, for any three elements, x y and z x ~ y and y ~ z implies than x ~ z. For example, "is greater than (>)" is transitive, but "is not equal to" is not.
The equation z-19 time 34 is a verbal sentence. This a math problem.
If you mean what is the name for what x, y, and z when used in math, then the word is variable.
75..... my math teacher would be so proud of me just kidding
zero z-coordinate on a z-axis, zilch, zombie (math student)
Zero? Probably not.
the only math words i know that start with the letter z is z intercept, z-axis and zero
Zero Matrix Zero of a Function Zero Slope
a zero matrix,zero of a function and a zero slope
z-axis z-intercept Zeta functions
Z is the only letter that starts with Z
Zero, Zenith, zillion (informal).