Answer: 9
Step-by-step explanation:
Answer:
95.44%
Step-by-step explanation:
Mean rate (μ) = 160 euros
Standard deviation (σ) = 8 euros
For any given rate, X, the z-score is:
For X = 144 euros:
For X= 176 euros
In a standard distribution, a z-score of -2 corresponds to the 2.28th percentile, while a z-score of 2 corresponds to the 97.72th percentile.
Therefore, the percentage of hotels with rates between 144 and 176 euros is:
Answer:
135
Step-by-step explanation
Turn 54% into a decimal so it would be like 0.54
Then multiply 250 by 0.54 to get 54% of the number.
Answer:
Approximately , assuming that .
Step-by-step explanation:
When the force is constant, moving by in the direction of the force would do a work of .
However, in this example, as an increasing portion of the chain gets lifted up, the force lifting the chain would increase in size. Hence, apply the integral form of this equation.
Let denote the force required to lift the chain when the height above the ground is meters. At that moment, exactly of the chain would be above the ground. The mass of that much of the chain would be the mass of the whole chain.
.
Integrate with respect to :
.
In other words, it would take approximately of energy to raise one end of the chain to that height of .
2,200 ÷ 40 = 55
So your answer is..
d.) 55
Good Luck! :)