Suppose a population contains 40,000 people. All else being equal, a study based on a population sample that includes which of the following numbers of respondents would be the most reliable?

What are multiples of 3 and 4

Your class goes to an amusement park. admission is $10 for each student and $15 for each chaperone. the total cost is $380. there are 12 girls in your class and 6 chaperones on the trip. how many boys are in your class?

4x+y=10 what is the missing equation? (___, - 6)

Find the area of an equilateral triangle with radius 22 cm. Round to the nearest whole number.

At George Washington High School the ratio of graduating seniors that go on to college, as compared to those who do not, is 7 : 4. Last year 28 students went on to college. How large was the graduating class?

How do I find the perimeter of a triangular prism?

A garden shop sells 15 " by 15 " square stepping stones for the same price as 20 " round stones. If all stepping stones are the same thickness, which option gives the most rock for the money? The area of a square stepping stone is (?) in.

What is 2 1/2 / 1/3?

42+36 = use rounding or compatible numbers to estimate the sum

Elana spent 2.50 on pineapple juice pineapple juice costs. 10 per ounce. how many ounces of pineapple juice did Elana buy?