Solve the problem.A brick staircase has a total of 19 steps The first step requires 103 bricks. Each successive step requires 3 fewer bricks than the prior one. How many bricks are required to build the staircase?

A. 2888 bricks
B. 1444 bricks
C. 2470 bricks
D. 1415.5 bricks


Answer: B

Mathematics

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Find fx, fy, and fz.f(x, y, z) = ln (xy)z

A. fx = - ; fy = - ; fz = ln (xy)
B. fx = ; fy = ; fz = z ln (xy)z - 1
C. fx = ; fy = ; fz = ln (xy)
D. fx = z ln ; fy = z ln ; fz = ln (xy)

Mathematics

Evaluate the integral by making a substitution and then using a table of integrals.

A. 2 sin-1   + C
B.  + 2 sin-1   + C
C.  + 2 ln   + C
D.  + 2 ln  + C

Mathematics

Which of the given lines is parallel to the line x=8+t, y=t, z=-7-10t?

Mathematics

Determine if the series converges or diverges; if the series converges, find its sum.

A. Converges; 
B. Converges; 
C. Converges; 5
D. Diverges

Mathematics