Solve the problem.The three squares stand for the numbers 4,6 and 8 in some order. Fill in the squares to make a true statement. + 9 × - ÷ 2 = 38
A. 6, 8, 4
B. 8, 6, 4
C. 4, 8, 6
D. 6, 4, 8
Answer: D
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Factor the difference of two squares completely.(6x + y)2 - 25
A. (6x + y + 5)2 B. (6x + y - 5)2 C. (6x + y + 5)(6x + y - 5) D. Prime
Solve the problem.Conservationists tagged 100 black-nosed rabbits in a national forest in 1990. In 1992, they tagged 200 black-nosed rabbits in the same range. If the rabbit population follows the exponential law, how many rabbits will be in the range 8 years from 1990?
A. 119 B. 238 C. 1600 D. 3200
Find the exact value of the expression.cos 25° cos 35° - sin 25° sin 35°
A. 
B. 
C. 
D. 
The displacement d (in meters) of an object at time t (in seconds) is given. Describe the motion of the object. What is the maximum displacement from its resting position, the time required for one oscillation, and the frequency?d = 5 - 6 cos (?t)
A. simple harmonic; 6 m; 2 sec; 
oscillation/sec
B. simple harmonic; 6 m; 
sec; 2 oscillations/sec
C. simple harmonic; 5 m; 2 sec; 
oscillation/sec
D. simple harmonic; -6 m; 2 sec; 
oscillation/sec