Solve the equation by the zero-factor property.2x2 = 21x - 49
A. {7, 14}
B. 
C. 
D. 
Answer: D
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) = (9t - 5t3)i + 4tan(2t)j + e4tk
A. a
= - 
?i + 64j + 16e1/2?k
B. a
= 
?i + 64j + 16e1/2?k
C. a
= - 
?i - 64j + 16e1/2?k
D. a
= - 
?i - 64j + 16k
Mathematics
Use the quadratic formula to solve the equation.0.3x2 + 0.5x + 0.8 = 0
A. {
, 
}
B. {
, 
}
C. {
, 
}
D. {
, 
}
Mathematics
Perform long division.
A. -3x2 + 5x - 2
B. -3x2 + 5x - 2 + 
C. -3x2 + 5x - 2 + 
D. x2 - 2 + 
Mathematics
Solve the rational equation symbolically, numerically, or graphically.
- 
= 
A. -20
B. 40
C. 20
D. 2
Mathematics