Solve the problem.An older model computer came with 930 MB of memory, while a more modern computer comes with 2 GB of memory. The modern computer has how many times as much memory as the old, to the nearest tenth?
A. 0.2 times as much memory
B. 21.5 times as much memory
C. 4.7 times as much memory
D. 2.2 times as much memory
Answer: D
Mathematics
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Solve the given differential equation. (The form of yp is given.)D2y + 7Dy + 12y = 2x (Let yp = A + Bx.)
A. y = c1e-3x + c2e-4x + 
- 
x
B. y = c1e-3x + c2e-4x - 
+ 
x
C. y = c1e3x + c2e4x - 
+ 
x
D. y = c1e-3x + c2e-4x + 
x
Mathematics
Use the product rule to simplify the expression. Write the answer with only positive exponents.10-11 ? 103
A. -1033
B. 
C. 
D. 108
Mathematics
Simplify.
A. 15y(y + 6)
B. 
C. 
D. 
Mathematics
Simplify, if possible, by combining like terms.-5a + 7a + 6a
A. 2a2 + 6a B. 2a + 6 C. 8a3 D. 8a
Mathematics