89 points! hurry within 2 minutes. jered's parents are going to repaint their house. they need to select two colors to complete the job. if they previously narrowed their decision down to six colors, how many combinations of two can they choose from?

The formula for combinations is n! / (r!(n-r)!)

where n is the total number of objects and r is the sample.

So you get 6! / (2!(6-2)!)

The ! means you multiply the number by all numbers below it

so 6! = 6 * 5 *4 * 3 *2 *1  = 720

2! = 2*1 = 2

6-2 = 4, 4! = 4 * 3 *2 *1 = 24

Now you have 720 / 2 * 24 =

720 / 48

Answer = 15 possible combinations.

last one.

step-by-step explanation:

last one.

generally speaking, the others follow some sort of pattern that correlates to either linear (looks like a straight line) or sinusoidal (looks like an s).

the last one is just a random cloud of points that doesn't correlate to any particular known order.

kk.bj.

step-by-step explanation:

.mnm.kn.kj