Subtract.Subtract -7 from 2.
A. -5
B. -9
C. 9
D. 5
Answer: C
Mathematics
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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (4 cos t)i + (8 sin t)j
A. a = (-4 cos t)i + (-8 sin t)j B. a = (4 sin t)i + (8 cos t)j C. a = (4 cos t)i + (8 sin t)j D. a = (-4 sin t)i + (-8 cos t)j
Mathematics
Match the vector equation with the correct graph.
r(t) = sin tj - cos tk; 0 ? t ? 
A. Figure 2 B. Figure 7 C. Figure 4 D. Figure 1
Mathematics
Find the product.(7m + 4)2
A. 7m2 + 16 B. 7m2 + 56m + 16 C. 49m2 + 16 D. 49m2 + 56m + 16
Mathematics
Find all specified roots.Cube roots of 1.
A. 1, - 
+ 
i, - 
- 
i
B. -1, 1
C. 1, 
+ 
i, - 
+ 
i
D. 1, 
- 
i, - 
- 
i
Mathematics