Select all the statements that apply to the concept of a residual. 1) Residuals should either be all positive or all negative.
2) Residual plots determine whether a function is a good fit.
3) If a function fits well, the residuals will form a pattern.
4) Residuals area calculated by finding the difference between the actual y-value and the predicted y-values.
PLEASE HELP, WILL GIVE BRAINLIEST! NO SCAMS OR LINKS OR I WILL REPORT!

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.