The principal at Marina Middle School wants to determine if the 120 students in the seventh grade prefer to visit the aquarium or the science museum for their end-of-year trip. Select all the sets of people that would be a representative sample of the population. 20 sixth-grade students, 20 seventh-grade students, and 20 eighth-grade students
10 seventh-grade boys and 10 seventh-grade girls
25 seventh-grade students
15 seventh-grade boys and 5 teachers
25 students from the school

help me solve this please

10 seventh-grade boys and 10 seventh-grade girls

25 seventh-grade students

Step-by-step explanation:

Sampling

This is a common statistics practice, when we want to study something from a population, we find a sample of this population. This sample has to be representative.

In this question:

Students in the seventh grade prefer to visit the aquarium or the science museum for their end-of-year trip.

So the sample would have to contain only students from the seventh grade. So the correct options are:

10 seventh-grade boys and 10 seventh-grade girls

25 seventh-grade students

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation: