When making pink paint, the art teacher uses the ratio 3: 2 for every cup of white paint, she uses in the mixture. she needs to use 2 red paint.

22 dimes and 9 nickels

step-by-step explanation:

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,