Determine whether the matrices are inverses. 
, 
A. Yes
B. No
Answer: B
Mathematics
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Find the arc length parameter along the curve from the point where t = 0 by evaluating 
r(t) = (2cos t)i + (2sin t)j + 5tk
A. 
t
B. 
t
C. 
t
D. 3
t
Mathematics
Solve the problem.At Allied Electronics, production has begun on the X-15 Computer Chip. The total revenue function is given by 
and the total profit function is given by 
, where x represents the number of boxes of computer chips produced. The total cost function, C(x), is such that 
Find C(x).
A. C(x) = 13x + 12 B. C(x) = -0.3x2 + 22x + 16 C. C(x) = 12x + 21 D. C(x) = 11x + 16
Mathematics
Solve the formula for the specified variable.A = 
h(a + b)
for b
A. b = 
B. b = 
C. b = 
D. b = 
Mathematics
Evaluate.(-5 - 6)(-3 + 5) - 74
A. 2 B. 2401 C. -2423 D. 2379
Mathematics