Answer:
2 4/15 pints
Step-by-step explanation:
Caden has 3 2/3 pints of water in a pitcher.
He has 1 2/5 pints of water left in the pitcher.
The amount of water he poured is calculated as
3 2/3 - 1 2/5
3 - 1 + (2/3 - 2/5)
Lowest Common Denominator is 15
2 + (5 × 2 - 3×2/15)
2 + (10 - 6/15)
2 + (4/15)
= 2 4/15 pints
He poured 2 1/15 pints of water.
Answer:
281 ft²
Step-by-step explanation:
Cuboid + lateral surface area of the pyramid - square base
2[(4×12)+(4×5)+(12×5)] + 4[½×5×(12-7)] - 5²
2(48+20+60) + 4(12.5) - 25
2(128) + 50 - 25
256 + 25
281 ft²
Answer:
And using a calculator, excel or the normal standard table we have that:
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:
Where and
They select a sample size of n=9 people.The distribution for the sample mean is given by:
And we want to find this probability:
In order to the helicopter can safely lift off. We can use the z score formula given by:
And using a calculator, excel or the normal standard table we have that:
Hope this helps! Sorry if it doesn't.