Write the number in scientific notation.0.000753
A. 7.53 × 10-4
B. 7.53 × 10-5
C. 7.53 × 10-3
D. 7.53 × 104
Answer: A
Mathematics
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Find the unit tangent vector T and the principal unit normal vector N. r(t) = (t2 - 5)i + (2t - 5)j + 8k
A. T = 
i - 
j; N = - 
i - 
j
B. T = 
i + 
j; N = 
i + 
j
C. T = 
i + 
j; N = 
i - 
j
D. T = 
i + 
j; N = 
i - 
j
Mathematics
Solve the equation.(6x - 4)2/3 - 3 = 22
A. 
B. 
C. 
D. 
Mathematics
Solve using matrices.x - 5y = -4x + 8y = -4
A. (4, 0) B. (0, 4) C. (0, -4) D. (-4, 0)
Mathematics
Find the quotient and simplify.
÷ 
A. 
B. 
C. 
D. 
Mathematics