Find the value of df-1/dx at x = f(a).f(x) = 3x + 10, a = 5
A. 
B. 3
C. 10
D. 
Answer: D
Mathematics
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Express the number in terms of j.
A. -2j
B. 2j
C. 2
D. -2
Mathematics
As part of a study, 800 college football players are randomly chosen and their weights taken. The distribution of the weights is approximately normal. The average weight is 235 pounds and the standard deviation is 25 pounds.A weight of 185 pounds corresponds to a standardized value of
A. -3. B. -2. C. -1.5. D. -1. E. none of these
Mathematics
Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + 5y2 = 4x2 - 5y2 = 8
A. (
, 
), (
, -
), (-
, 
), (-
, -
)
B. (
, 
), (-
, -
)
C. (
, 
), (
, -
)
D. no solution
Mathematics
Solve the equation by completing the square.4x2 - 7x = 1
A. 
B. 
C. 
D. 
Mathematics