Find the LCM of the set of numbers.7, 14, 10
A. 14
B. 980
C. 140
D. 70
Answer: D
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (5t cos t - 5 sin t)j + (5t sin t + 5 cos t)k
A. T = (-sin t)j + (cos t)k
B. T = (5 cos t)j - (5 sin t)k
C. T = - 
(sin t)j + 
(cos t)k
D. T = (-5 sin t)j + (5 cos t)k
Mathematics
Solve the rational equation.
- 
= 
A. 5
B. 
C. 1
D. -1
Mathematics
Identify the following as an expression or an equation. 
x + 3 = 
x - 3
A. Equation B. Expression
Mathematics
Multiply or divide.
? 
A. x + 2
B. 
C. 
D. 
Mathematics