Answer:
0.0066
Step-by-step explanation:
Given that:
Mean
= 75
Variance 
The standard deviation 
The sample size n = 100









Using the Z table;
P(x > 83.7) = 1 - 0.9934
P(x > 83.7) = 0.0066
Thus, probability = 0.0066
Answer:
x = 3
Step-by-step explanation:
x + 3 = 4x - 6
add 6 to both sides
x + 9 = 4x
subtract x from both sides
9 = 3x
divide 3 from both sides
x = 3
Do you want an answer like this?
5/8>1/8