The ratio of students to teachers at a local elementary

school is 18:4. If there are 20 teachers at the school,

how many students are there?

Bank account balance:$357 check written for:$486 what was the new balance?

Your mom pays you $10 a week plus $5 for every A you make on a test. If you want to make $35 one week, how many A's do you need to make?

The high temperatures at a park for 10 days are 40, 42, 41, 41, 43, 43, 44, 45, 44, and 45 degrees Fahrenheit. What is the interquartile range of the data?

A function is defined by f (x) = 6x + 15. What is f (2.5) ?

How is 5 1/2inches the same as 11 half inches?

Apply the law of syllogism to write a new statement based on the following: A → B: If it rains, then football practice will be canceled. B → C: If football practice is canceled, then Patrick will go to the cinema.

If tan 0 = - 3/8 which expression is equivalent to cot0?

How many lines of symmetry does the letter R have?

N//4 = 18/72, what is n

Given a triangle with angles of 23, 90, 67, what type of triangle is it: acute, equiangular, obtuse, or right?