Solve using Cramer's rule.
A. (-1, -2)
B. (0, -2)
C. (0, -3)
D. No solution
Answer: C
Mathematics
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Use a product-to-sum identity to rewrite the expression.sin(12s - 2) sin (6s - 5)
A. 0.5(cos(6s - 7) - cos(18s - 3)) B. 0.5(cos(6s + 3) - cos(18s - 7)) C. 0.5(cos(6s + 3) + cos(18s - 7)) D. 0.5(sin(6s + 3) - sin(18s - 7))
Mathematics
The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 1 for r(t) = t5i + 4ln
j + 
k
A. a(1) = 20i - 4j - 2k
B. a(1) = 20i + 
j - 2k
C. a(1) = 20i + 4j + 2k
D. a(1) = 20i + 
j + 2k
Mathematics
Round the number as indicated.359 to the nearest ten
A. 360 B. 370 C. 460 D. 350
Mathematics
Simplify.(7!)2
A. 49 B. 10,080 C. 25,401,600 D. 518,400
Mathematics