John always wears a shirt, pants, socks, and shoes. he owns

12pairs of socks,
3
pairs of shoes,
5
pairs of pants, and
5
shirts.

900 different combinations.

Step-by-step explanation:

He always where a shirt, pant, a pair of socks, and a pair of shoes. This type of question is asking for the amount of different ways he can wear the outfits. To do so, simplify just multiply all the numbers together:

12 x 3 x 5 x 5 = 36 x 25 = 900

There are 900 different combinations he can wear.

~

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3