Find the mean. If necessary, round to one decimal place.136, 62, 231, 121

A. 137.5
B. 138
C. 137
D. 183.3


Answer: A

Mathematics

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Find the equation of the conic with the given characteristics.Parabola with vertex (3, -6) and focus (1, -6)

A. (x + 3)2 = 20(y - 6) B. (y + 6)2 = 8(x - 3) C. (x + 3)2 = -20(y - 6) D. (y + 6)2 = -8(x - 3)

Mathematics

Find dy/dt.y = cos7(?t - 20)

A. 7 cos6(?t - 20) B. -7? cos6(?t - 20) sin(?t - 20) C. -7 cos6(?t - 20) sin(?t - 20) D. -7? sin6(?t - 20)

Mathematics

Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them. 4x - 4y - z = -4  x - 5y + 4z = -4 3x + y + z = 24

A. x = 5, y = 4, z = 5 B. x = -5, y = 5, z = 10 C. x = 5, y = 5, z = 4 D. Inconsistent

Mathematics

Find a formula for the function graphed.

A. f(x) = 
B. f(x) = 
C. f(x) = 

D. f(x) = 

Mathematics