A student is studying mathematics and chemistry. The probability that he passes mathematics is 0.75, the probability that he fails chemistry is 0.2, and the probability that he passes mathematics but fails chemistry is 0.05.Find the probability that he passes both courses.
A. 0.70
B. 0.75
C. 0.60
D. 0
E. none of these
Answer: A
Mathematics
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Consider the following equations:
x + 2y + z = 2 2x + y + 3z = 4 4x + 2y - 2z = -3
Mathematics
Solve the equation.
- x = 6
A. ? B. {-3} C. {-7} D. {-7, -3}
Mathematics
Use the graph of f to sketch a graph of the inverse of f using a dashed curve.
A. 
B. 
C. 
D. 
Mathematics
Is 
a solution to the equation 
?
?
A. no B. yes
Mathematics