Classify the triangle as scalene, isosceles, or equilateral.
A. isosceles
B. scalene
C. equilateral
Answer: B
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (1 + 10t2)i + (3 + 11t2)j + (3 + 2t2)k
A. T = 
i + 
j + 
k
B. T = 10i + 11j + 2k
C. T = 
i + 
j + 
k
D. T = 
i + 
j + 
k
Mathematics
Solve the system by graphing.-5x - 3y = 64x - 5y = -2
A. (-1, -0.4) B. (-0.6, 0.9) C. (0.5, 0.4) D. (-0.4, -1)
Mathematics
Solve.A manufacturer of medical supplies produces 1-liter bags of saline solution. The cost to produce x thousand bags of saline is given by the cost function 
where C is the cost in thousands of dollars. Find the cost to produce 4000 bags of saline.
A. $4000 B. $53,600 C. $34,400 D. $4.00
Mathematics
Perform the indicated operation.2 - 72
A. -25 B. 47 C. 25 D. -47
Mathematics