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

X=6 if you need an explanation commu
The triangle is a right triangle so use the Pythagorean theorem.
a² + b² = c²
15² + b² = 17²
225 + b² = 289
b² = 64
b = √64
b = 8
Hope this helps :)
For every liter of gas there is 1,000 milliliters. If you multiply 50 liters by 1,000 milliliters you will get 50,000mls.