Please help
A. -5
B. -1/5
C. 1/5
D. 5

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

Find the missing variable for a parallelogram: a = latex: 28in^2 28 i n 2 h = b = 6.3 in (1in=2.54cm)

Use sigma notation to represent the following series for 9 terms.