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Phoenix [80]
3 years ago
8

Can someone help :0 not sure how to solve but I'm doing algebra if that helps

Mathematics
1 answer:
Rus_ich [418]3 years ago
8 0

Answer:<em>r = d/t</em>

Step-by-step explanation:

1. If we are solving for <em>r, </em>we need to have <em>r</em> on one side of the equation.

2. Divide by t on both sides = d/t=r

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On a certain​ route, an airline carries 7000 passengers per​ month, each paying ​$30. A market survey indicates that for each​ $
KengaRu [80]

Answer:

The ticket price that maximizes revenue is $50.

The maximum monthly revenue is $250,000.

Step-by-step explanation:

We have to write a function that describes the revenue of the airline.

We know one point of this function: when the price is $30, the amount of passengers is 7000.

We also know that for an increase of $1 in the ticket price, the amount of passengers will decrease by 100.

Then, we can write the revenue as the multiplication of price and passengers:

R=p\cdot N=(30+x)(7000-x)

where x is the variation in the price of the ticket.

Then, if we derive R in function of x, and equal to 0, we will have the value of x that maximizes the revenue.

R(x)=(30+x)(7000-100x)=30\cdot7000-30\cdot100x+7000x-100x^2\\\\R(x)=-100x^2+(7000-3000)x+210000\\\\R(x)=-100x^2+4000x+210000\\\\\\\dfrac{dR}{dx}=100(-2x)+4000=0\\\\\\200x=4000\\\\x=4000/200=20

We know that the increment in price (from the $30 level) that maximizes the revenue is $20, so the price should be:

p=30+x=30+20=50

The maximum monthly revenue is:

R(x)=(30+x)(7000-100x)\\\\R(20)=(30+20)(7000-100\cdot20)\\\\R(20)=50\cdot5000\\\\R(20)=250000

3 0
3 years ago
Please answer this correctly
motikmotik
I would say answer 3
3 0
3 years ago
Read 2 more answers
A grocery store has a discount of 13% off hand soap. At the same time, the hand soap manufacturer has a coupon for $2.00 off. As
irga5000 [103]

Answer: Well, $0.26 has to be paid more if the coupon is applied first             ( I hope this helped )

6 0
3 years ago
Read 2 more answers
A university has 29,970 students. In a random sample of 285 students, 19 speak three or more languages. Predict the number of st
hodyreva [135]
Set up a proportion.
Let x = the number of students in 29970 who speak 3 or more languages.

285/19 = 29970/x Cross multiply
285 x = 19 * 29970
285x = 569430
x = 569430/285
x = 5415 students speak 3 languages.
4 0
3 years ago
I don’t understand this math at all someone please help !
slavikrds [6]
I believe the answer is -21i
5 0
3 years ago
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