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1. |
and are similar. Find a if x = 7, y = 1, and  |
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A. |
 |
B. |
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C. |
1 |
D. |
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Hint |
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2. |
A tree that is 5 feet tall casts a shadow 2 feet long. A nearby building casts a shadow that is 20 feet long. How tall is the building? |
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A. |
10 ft |
B. |
50 ft |
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C. |
20 ft |
D. |
0.5 ft |
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Hint |
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3. |
Find sin X. |
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A. |
0.6 |
B. |
8 |
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C. |
0.8 |
D. |
0.75 |
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Hint |
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4. |
In a right triangle, the legs have measures a = 11 and b = 19. Find the length c of the hypotenuse to the nearest hundredth. |
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A. |
21.95 |
B. |
15.49 |
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C. |
28.17 |
D. |
27.63 |
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Hint |
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5. |
Which of the following side measures would form a right triangle? |
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A. |
8, 11, 19 |
B. |
18, 20, 27 |
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C. |
10, 24, 26 |
D. |
7, 9, 12 |
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Hint |
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6. |
Simplify . |
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A. |
The expression is in simplest form |
B. |
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C. |
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D. |
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Hint |
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7. |
Solve . |
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A. |
2 |
B. |
-1 |
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C. |
0 |
D. |
no real solution |
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Hint |
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8. |
The distance between the points with coordinates (-8, 4) and (1, a) is 15 units. Find the value of a. |
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A. |
8 |
B. |
8 or 16 |
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C. |
-8 or 16 |
D. |
-8 |
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Hint |
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9. |
Simplify . |
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A. |
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B. |
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C. |
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D. |
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Hint |
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10. |
Simplify . |
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A. |
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B. |
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C. |
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D. |
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Hint |
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11. |
What is the perimeter of a rectangle whose length is and whose width is  |
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A. |
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B. |
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C. |
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D. |
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Hint |
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12. |
Suppose the formula represents the relationship between a plane's length L and the pounds P its wings can lift, where k is a constant of proportionality calculated for a plane. If its wings are 150 feet and k = 0.1669, what range of values are possible for weight? |
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A. |
greater than 134,811 pounds |
B. |
less than 134,811 pounds |
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C. |
greater than 3755 pounds |
D. |
less than 3755 pounds |
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Hint |
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13. |
What is the distance between (2, 5) and (11, –3)? |
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A. |
17 |
B. |
145 |
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C. |
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D. |
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Hint |
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14. |
Libby looked out of her airplane window at a 32° angle with respect to the horizontal, and saw the Sears Tower building in Chicago. If the airplane had an altitude of 4000 feet, how far away were they from being directly over Chicago? |
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A. |
1616 ft. |
B. |
6401 ft. |
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C. |
9900 ft. |
D. |
2499 ft. |
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Hint |
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