Find the exact value of the expression.sin
A. 
B. 
C. 
D. 
Answer: C
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Use the quadratic formula to solve the equation.x2 + 10x + 6 = 0
A. {-10 + 
}
B. {-5 ± 
}
C. {5 ± 
}
D. {5 + 
}
Factor the trinomial completely. If the trinomial cannot be factored, say it is prime.x2 - 10xy + 21y2
A. (x - 7y)(x + 3y) B. (x + 7y)(x + 3y) C. (x + 7y)(x - 3y) D. (x - 7y)(x - 3y)
Solve the right triangle for all missing sides and angles to the nearest tenth.
c = 18B = 16.8°
A. A = 73.2°, a = 5.4, b = 5.2 B. A = 73.2°, a = 17.2, b = 5.2 C. A = 73.2°, a = 5.2, b = 17.2 D. A = 73.2°, a = 17.2, b = 5.4
Solve the problem.The distance that an object falls when it is dropped is directly proportional to the square of the amount of time since it was dropped. An object falls 128 feet in 2 seconds. Find the distance the object falls in 4 seconds.
A. 512 ft B. 256 ft C. 8 ft D. 128 ft