In your class, there are 12 boys, 9 girls and 1 teacher. what is the ratio of girls to teachers?

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers