There are 25 students in a class. 2/5 of them walk to school. which method is a way to find the number of students who walk to school?
divide 25 by 5 and then multiply the quotient by 2.
multiply 25 by 5 and then multiply that product by 2.
multiply 1/25 by 2/5.
multiply 25 and 5/2.

One integer is 5 more than another. their product is 104. find the integers

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?