15 over 5a is the answer 3a?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Solving systems of linear equations: tables represent two linear functions in a systemöwhat is the solution to this system? 0 (10)0 (1.6)0 18,26)0 18-22)

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?