Find the product.(-7x4)(9x3)
A. -63x12
B. 16x12
C. 16x7
D. -63x7
Answer: D
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 3 for r(t) = (5t - 3t4)i + (3 - t)j + (3t2 - 10t)k
A. a(3) = -324i + 6k B. a(3) = -324i - j + 6k C. a(3) = -81i + 6k D. a(3) = 324i + 6k
Mathematics
Change the improper fraction to a whole or mixed number.
A. 4
B. 5
C. 3
D. 4
Mathematics
Simplify. Assume that all variables represent positive real numbers.
? 
A. 
B. 
C. 
D. 
Mathematics
Use the graph to determine the domain and range of the function. 
A. domain: {x|x ? -3, x ? 3} range: all real numbers B. domain: {x|x ? -3, x ? 3} range: {y|y ? 0} C. domain: all real numbers range: all real numbers D. domain: all real numbers range: {y|y ? -3, y ? 3}
Mathematics