Write repeating decimal 0.027272727 ... as a fraction.

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.

What are “like terms”? why can we only add like terms?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.