The ratio of students to teachers in a field trip is 21 to 1. How many teachers are on the trip if the trip has a total of 440 people? (Assume the only people on the trip are either students or teachers )

20 teachers went on the trip

Step-by-step explanation:

yes because they have the same amount of green and blur marbles.

step-by-step explanation:

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.