Decide whether the figure is convex or not convex.
A. Not convex
B. Convex
Answer: A
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 0 for r(t) = t2i + (7t3 - 10)j + 
k
A. a(0) = 2i + 
k
B. a(0) = 2i - 
k
C. a(0) = 2i - 
k
D. a(0) = 2i - 
k
Mathematics
Evaluate.(-0.9)3
A. 0.729 B. -7.29 C. 7.29 D. -0.729
Mathematics
Provide an appropriate response.Factor: y2 + 12y - 45
A. (y +- 9)(y - 5) B. (y + 3)(y +- 15) C. (y - 3)(y + 15) D. (y + 5)(y + 0)
Mathematics
Round the following to the nearest ten, nearest hundred, and nearest thousand.2117
A.
| Ten | 2110 |
| Hundred | 2200 |
| Thousand | 3000 |
B.
| Ten | 2110 |
| Hundred | 2100 |
| Thousand | 2000 |
C.
| Ten | 2120 |
| Hundred | 2100 |
| Thousand | 2000 |
D.
| Ten | 2120 |
| Hundred | 2200 |
| Thousand | 2000 |
Mathematics