If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the velocity vector.r(t) = (4t2 + 16)i + 
j
A. v = (8t)i + 
j
B. v = (8t)i - 
j
C. v = 
i + (8t)j
D. v = (8)i + 
j
Answer: A
Mathematics
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Use the appropriate formula to find the indicated figurate number.the 13th octagonal number
A. O13 = 162.5 B. O13 = 195 C. O13 = 481 D. O13 = 58.5
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Provide an appropriate response.If a trend line had equation y = 6x - 11, what type of association would you expect the data to have?
A. negative association B. positive association C. no association
Mathematics
Multiply.(4i)(6i)
A. 24 B. -24 C. -10 D. 10
Mathematics
For the given figure the hexagon is regular and the shaded regions are rhombi.
(a) Describe the rotational symmetries of the figure or explain why none exist.
(b) Sketch the lines of symmetries on the figure or explain why none exist.
Mathematics