The circle in the figure below has a radius of r and center at C. The distance from A to B is x, the distance from A to D is y, and the length of arc BD is s. For the following problem, redraw the figure, label it with the values given, and then solve.
?
If 
and 
find y.
?
Apply the rules regarding the use of significant digits after all computations are complete.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: E
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Use Pascal's triangle to expand the binomial.(b - y)6
A. b6 - 6b5y + 15b4y2 - 20b3y3 + 15b2y4 - 6by5 + y6 B. b6 - 8b5y + 17b4y2 - 22b3y3 + 17b2y4 - 8by5 + y6 C. b6 - 6b5y - 30b4y2 + 120b3y3 + 360b2y4 - 720by5 - 720y6 D. b6 - y6
Solve the problem.The area of a triangular poster is 864 square centimeters. Its altitude is 10 feet shorter than twice its base. Find the lengths of the altitude and base.
A. base = 64 cm; altitude = 13.5 cm B. base = 32 cm; altitude = 27 cm C. base = 32 cm; altitude = 54 cm D. base = 16 cm; altitude = 54 cm
Factor completely.7x2 - 7x - 42
A. 7(x + 2)(x - 3) B. (7x + 14)(x - 3) C. 7(x - 2)(x + 3) D. Prime
Round the number to the nearest ten, nearest hundred, and nearest thousand.7390
A.
| Ten | 7390 |
| Hundred | 7400 |
| Thousand | 7000 |
B.
| Ten | 7400 |
| Hundred | 7300 |
| Thousand | 8000 |
C.
| Ten | 7400 |
| Hundred | 7400 |
| Thousand | 7000 |
D.
| Ten | 7390 |
| Hundred | 7300 |
| Thousand | 7000 |