Ryan has his own business selling watches, and he wants to monitor his profit per watch sold. The expression 200x-300/x models t
he average profit per watch sold, where x is the number of watches sold.
Part A
What does the numerator of this rational expression represent?
Part B
What does the denominator of this rational expression represent?
Part C
Rewrite the expression 200x-300/x as a sum of two fractions, and simplify.
Part D
What does each part in the expression from part C represent?
Part E
Ryan also earns money by selling colored watch bands with the watches he sells. The linear expression 100x-50 models Ryan’s additional income. What is the expression that models the new average profit, including the bands? Note: to obtain the new average profit expression, add the linear expression to the original rational expression. Write the new profit expression as one fraction.
15 points please help me!!!! PLZZZZZ
Part A
What does the numerator of this rational expression represent?
Part B
What does the denominator of this rational expression represent?
Part C
Rewrite the expression 200x-300/x as a sum of two fractions, and simplify.
Part D
What does each part in the expression from part C represent?
Part E
Ryan also earns money by selling colored watch bands with the watches he sells. The linear expression 100x-50 models Ryan’s additional income. What is the expression that models the new average profit, including the bands? Note: to obtain the new average profit expression, add the linear expression to the original rational expression. Write the new profit expression as one fraction.
15 points please help me!!!! PLZZZZZ
1 answer:
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Tossing a coin is a binomial experiment.
Now lets say there are 'n' repeated trials to get heads. Each of the trials can result in either a head or a tail.
All of these trials are independent since the result of one trial does not affect the result of the next trial.
Now, for 'n' repeated trials the total number of successes is given by
where 'r' denotes the number of successful results.
In our case and
,
Substituting the values we get,
Therefore, there are 1352078 ways to get heads if a person tosses a coin 23 times.