Graph the system of inequalities.-x + 2y ? -63x + 2y > -18
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 
for r(t) = (7t - 2t3)i + 3 tan (2t)j + e5tk
A. a
= - 
?i - 48j + 25e(5/8)?k
B. a
= - 
?i - 48j + 25k
C. a
= - 
?i + 48j + 25e(5/8)?k
D. a
= 
?i + 48j + 25e(5/8)?k
Mathematics
Find the limit.
A. 
B. -
C. 0
D. Does not exist
Mathematics
Solve.45% of what is 72?
A. 160 B. 0.63 C. 1600 D. 63
Mathematics
Find the equation of the axis of symmetry.f(x) = -7x2 - 14x - 3
A. x = -2 B. x = 1 C. x = 4 D. x = -1
Mathematics