Give the order of the matrix, and identify the given element of the matrix.
; a34
A. 4 × 5; 1
B. 20; -7
C. 4 × 4; 2
D. 5 × 4; -8
Answer: A
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FInd the tangential and normal components of the acceleration.r(t) = (t - 7)i + (ln(sec t) - 1)j + 2k, -?/2 < t < ?/2
A. a = (cos t)T + (cos t)N B. a = (csc t)T + (sec t)N C. a = (sec t tan t)T + (sec t)N D. a = (sec2 t)T + (cos t)N
Determine if the series converges or diverges. If the series converges, find its sum.
A. converges; 
B. converges; ln 3
C. converges; 
D. diverges
Provide an appropriate response.Solve the following system of equations: 2x - 3y = 8 x + 2y = -3
Fill in the blank(s) with the appropriate word(s).
Solve the problem.The diagram shows the roads connecting four cities.WX
YZ How many ways are there to travel between cities Y and Z by passing through exactly two cities? (Hint: Write a matrix, A, to represent the number of routes between each pair of cities without passing through another city. Then calculate A2 and A3).
A. 14 B. 15 C. 11 D. 13