Answer:
U can refer this.... but im not sure... hope it's help ya!
A)If the order of the speakers is important, we have 20x19x18x17, or 116,280 different options.
b) If order is not important, then we have 20 choose 4, or 4845 different slates. ☺☺☺☺
Answer:
2(4x+3y)
Step-by-step explanation:
2(4x+3y)=8x+6y
ten less than the cube of a number n: