Which expressions are equivalent to LaTeX: 2\left(a+3b\right)2 ( a + 3 b )? Select all that apply.

Group of answer choices

2(3ab)

a+(a+6b)

6b+2a

2b+3a

a+3b

6ab

2a+6b

(a+3b)2

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible