Graph the system of inequalities.x + 2y ? 2 x - y ? 0
A. 
B. 
C. 
D. 
Answer: A
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Find the equation of the given function with the given amplitude, period, and displacement, respectively.cosine, 5, 
, 
A. y = 10 cos 
B. y = 5 cos 
C. y = 10 cos 
D. y = 5 cos 
The magnitudes src="https://sciemce.com/media/4/ppg__hgh0505191830__f1q120g6.jpg" alt="" style="vertical-align: -4.0px;" />
A. 19.1
B. 20.7
C. -36.2
D. 17.4
, 
, and the angle ? between the vectors v and w are given. Round the requested magnitude or angle to the nearest tenth.
= 14, 
= 13, ? = 80°
Find
Solve the problem.In how many ways can a group of 8 students be selected from 9 students?
A. 72 B. 9 C. 8 D. 1
Find an equation of variation for the given situation.y varies directly as x, and y = 0.9 when x = 0.7.
A. y = 1.6x
B. y = 
x
C. y = 
x
D. y = 0.2x