The equation for a circle is given by:
so:
The point which lies on the circle will be the one which satisfies the equation, hence:
Solution: The field will be harvested in approximately in 7 days.
Explanation:
Let the number of days be x in which the fields will completely harvested.
The farmer can harvest the wheat from 12 acres per day.
In x days he farmer can harvest 12x acres.
It is given that the farmer has 75 acres of wheat.
In 6th day the field will not harvested completely.
Therefore, the field will be harvested in approximately in 7 days.
Answer:
Step-by-step explanation:
Deepak charges for each Job = $30
An additional charges for working each hour = $15
Let x be the number of hours he worked for each job.
So,additional charges for working x hours = 15 x
So,he earns in total at each job =
We are also given that He only accepts jobs if he will earn at least $90 the job.
This means he must earn $90 or more than that .
So, the inequality becomes:
Hence an inequality to determine x, the number of hours he must work during each job in order to accomplish this is
Answer:
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 lifetime for a TV of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability like this:
And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.