Answer:
10x+23 (pretty sure) and the * means multiply
Step-by-step explanation:

Take notes and pay attention since just slacking off for only 10 minutes can get you behind and struggling.
Answer:
The scale factor is the ratio of the length of a side of one figure to the length of the corresponding side of the other figure.
Step-by-step explanation:
Answer:
90 degrees
Step-by-step explanation: