5x−2.5+6x−3= ___ (2x−1)

What's the missing digit?

some help me plz~

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

3a + 5b - 7 = 0 a - 2b - 4 = 0 solve the system by the elimination method. check your work {(96/11, -5/11)} {(34/11, -5/11)} {(32/33, 5/11)}

True or false? the sum of the differences (% - 7) is never zero for any distribution consisting of n observations.