On james’s mp3 player, he has 12 sad songs and 40 upbeat songs that he wants to put into playlists. he wants to have the same number of sad songs and upbeat songs in each playlist. what is the maximum number of playlists that he can create?

2 playlists
3 playlists
4 playlists
10 playlists

4 playlists or c

Step-by-step explanation:

I got a 100%

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15