Find the probability.A bag contains 5 red marbles, 4 blue marbles, and 1 green marble. What is the probability of choosing a marble that is not blue when one marble is drawn from the bag?
A. 6
B. 
C. 
D. 
Answer: D
Mathematics
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Find the gradient field F of the function f.f(x, y, z) = ln (x4 + y7 + z7)
A. F = 
ln ( y7 + z7)i + 
ln (x4 + z7)j + 
ln ( x4 + y7)k
B. F = 
i + 
j + 
k
C. F = 
i + 
j + 
k
D. F = 
i + 
j + 
k
Mathematics
Write the number in scientific notation.A business projects next year's profits to be $250,000,000.
A. 2.50 × 10-9 B. 2.50 × 109 C. 2.50 × 107 D. 2.50 × 108
Mathematics
Find the sum.-526 + 271
A. - 255 B. -797 C. 155 D. 255
Mathematics
The equation of the line with slope 
and passing through 
is:
A. 
B. 
C. 
D. 
Mathematics