Answer:
C. The principal randomly selects homeroom classes and surveys each student in the chosen classes.
Step-by-step explanation:
Middle school is 6-8th. Surveying only the eighth-grade students won't give a representative sample of the whole school only the eighth-graders. Option A is incorrect.
Surveying only the students in detention represents a very small amount of students compared to the school, therefore it is not a representative sample. Option B is incorrect.
Yet again, the students in the math club is a small amount of students compared to the school. It does not represent the entire, or majority of the population. Option D is incorrect.
Picking students from homeroom classes and surveying each will give a wider variation of opinions from each grade and therefore a representative sample. Option C is the correct answer.
Well, -11/10 is also -1.1. So, it goes right next to -1 on a number line.
The lesser number is 13.
Step-by-step explanation:
Step 1 :
Let x represent the first number and y represent the second number
Given, sum of 2 numbers = 30
So we have,y + x = 30
The difference of the 2 numbers = 4
so x - y = 4
Step 2 :
Adding the 2 equations obtained in step 2 we have,
2 x = 34 => x = 17
x + y = 30 => y = 30-x= 30 - 17 = 13
Step 3 :
Answer :
So 17 and 13 are the 2 numbers.
The lesser number is 13.
Answer:
3200 = 168x + 8
Step-by-step explanation:
$3200 is the total sales in dollars, so we're going to plug that in for y (it says in the equation that y represents the total sales in dollars). And the rest of the equation stays the same.
I hope this helped!