Why expression 7×3 to the x is not equal to the expression 21 to the x?

Do you mean: 7*3^x or (7*3)^x? For the first one, 7*3^x is not equal to 21^x because 7* (3^x) is not the same as 21^x. Now, this may sound confusing, so let's give x a value. If x = 2, then the expression would be 7* (3^2), which is 7*9, and that's not the same as 21^2 (42).

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula