Determine whether matrix B is the inverse of matrix A by finding the product AB.A = 
, B = 
A. B ? A-1
B. B = A-1
Answer: A
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If an average-sized man jumps from an airplane with an open parachute, his downward velocity 
seconds into the fall is
feet per second.
?
A. Find the average rate of change in velocity from 
to 
.B. Find the average rate of change from 
to 
.C. What do your answers from parts A and B tell you about how velocity increases with time?D. What is the limiting value for velocity?
What will be an ideal response?
Solve the system.5x - 7y + 6z = 7-20x + 28y - 24z = -2820x - 28y + 24z = 28
A. Infinitely many solutions B. (-3, 2, 6) C. No solution D. (2, 6, -3)
For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = (t2 - 9)i + (2t - 7)j + 8k; osculating plane at t = 8.
A. z = -8 B. z = 8 C. x + y + (z + 8) = 0 D. x + y + (z - 8) = 0
Provide an appropriate response.Solve: 
= x - 4
Fill in the blank(s) with the appropriate word(s).