If a random sample of size n is drawn from a normal population, then the sampling distribution of the sample mean will be:

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

I'm confused on this could anyone me and show me what i need to do to solve it.

Rick is driving to his uncles house in greenville, which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120