A family buys 4 airline tickets online. The family buys travel insurance that costs $19 per ticket. The total cost is $752. Let
2 answers:
Answer:
Givens
- The family buys 4 airline tickets online.
- The travel insurance costs $19 per ticket.
- The total cost is $752.
An equation that models this problem could be
Basically, we know that the insurance costs $19 which represents an additional costs after the price per ticket, that's why we need to add them. Then, we know that the familiy bought 4 tickes, that's why we multiply by 4, and finally, the total cost must be equal to 752, according to the problem.
<h3>B.</h3>To find the price of one ticket, we just need to solve the equation for
Therefore, one ticket costs $169.
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- Take x to right and divide
Hence
.
Inverse variation
Answer:
Step-by-step explanation:
If we approximate the binomial distribution with a normal distribution, we have to apply a correction factor for the fact that we are now dealing with a continuous variable instead of a discrete one, as it was with the binomial distribution.
The probability of no more than 35 defective CDs: P(X<35)
In this case, as X=35 is not included in the interval, we start the interval from X=35-0.5=34.5.
being Pb the probability under the binomial distribution and Pn the probability under the normal distribution.
The area for the normal distribution is the one below X=34 (or P(X<34)).