Answer:
The answer is decreasing the money
If its subtraction its $42
Step-by-step explanation:
I subtracted $120-$78=$42
I believe if you simply everything, you will get 17381 over 20 or 17381/20
-4 1/2 is the answer.
The mean is and standard deviation is . Then the variable .
Use substitution , then the variable .
The probability can be calculated in the following way:
for X=80, and . From the diagram .
Conclusion: if 188 students take the exam, then 188·0.84=157.92 (157) would receive a score above 80
This equation has only one solution
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