Solve the system. x - y + 5z = 52x + z = 0 x + 2y + z = -10
A. (0, -5, 5)
B. (0, -5, 0)
C. (0, 0, -5)
D. No solution
Answer: B
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) = (10t - 5t3)i + 2tan(3t)j + e3tk
A. a
= - 
?i - 72j + 9e1/4?k
B. a
= - 
?i - 72j + 9k
C. a
= - 
?i + 72j + 9e1/4?k
D. a
= 
?i + 72j + 9e1/4?k
Mathematics
Simplify.8 × 3 + {12 ÷ [8 - (3 + 2)]}
A. 28 B. 27 C. 30 D. 29
Mathematics
Factor the trinomial completely.6k2 - 25k + 14
A. (2k + 7)(3k + 2) B. (2k - 7)(3k - 2) C. (2k - 7)(3k + 2) D. Prime
Mathematics
Find the product.(x + 12)(x3 + 2x - 9)
A. x4 + 12x3 + 2x2 + 33x + 108 B. x4 + 2x2 - 9x + 12 C. x4 + 12x3 + 2x2 + 15x - 108 D. x3 + 14x2 + 15x - 108
Mathematics