Answer: x+8
The term 'sum' means 'result of adding two (or more) numbers or expressions'.
Use a Texas instrumental calculator and put all those points into stat edit and then put 4
Answer:
15 cm (make sure to not put value with answer (cm))
Step-by-step explanation:
9x9 = 81
12x12 = 144
81+144 = 225
= 15