As part of a statistics project, a 6th grade teacher brings to class a container with 200 red marbles and 800 white marbles which are thoroughly mixed. To figure out how many marbles in the container are red without actually counting them all, a student randomly draws 150 marbles from the container. Of the 150 marbles drawn, 33 are red.The N-value for this population is
A. 33.
B. 1000.
C. 200.
D. 150.
E. none of these
Answer: B
Mathematics
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Solve the problem.The hypotenuse of a right triangle is 9 feet long. One leg of the triangle is 3 feet longer then the other leg. Find the perimeter of the triangle.
A. 
ft
B. 
ft
C. (3
+ 9) ft
D. (3
- 9) ft
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Adjust the problem so that the coefficient is in the proper form.70 × 10-6
A. 0.7 × 10-5 B. 7 × 10-5 C. 0.7 × 10-4 D. 7 × 10-7
Mathematics
Evaluate using a number line.-17 + (-7)
A. -10 B. 10 C. -24 D. 24
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Factor the polynomial completely.9x2 + 30xy + 25y2
A. (3x - 5y)2 B. (3x + 5y)2 C. (3x + 5y)(3x - 5y) D. (9x + 1)(x + 25)
Mathematics