Quick math question i got stuck on this please help for a mark on brainliest:)

you have to change the sign from - to +

Step-by-step explanation:

-1.8 + k = 8.2

k = 8.2 + 1.8

k = 10

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3

the answer would be 150 books

step-by-step explanation:

if you divide 300 by 2 you will get 150