Find the value of the variable. Round the answer to the nearest tenth when needed. A 6
B. 6.7
C. 16.2
D. 22.5

What is the difference between the points (4, 7) and (4, -5)? a. 0 units b. 2 units c. 4 units d. 12 units

How do you solving the solution of each system using elimination?

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!