The ratio of the number of boys to the number of girls in a class is 12:13 What percentage of the class are boys?

Landon wrote that 3−2.6=4. which statement about his answer is true?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test

Why can't my rank go i have 1723 points, but my rank is only at ambitious, which is only 250 points! like, (p. s. i know this isn't related to math, but i just don't know why it's doing this and i would really appreciate if someone could tell me whats going on with this)