1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ZanzabumX [31]
3 years ago
13

How did you get that answer j

Mathematics
1 answer:
gtnhenbr [62]3 years ago
6 0

i answer the questions that relate to the lessons i've learned

You might be interested in
The publisher of a recently released nonfiction book expects that over the first 20 months after its release, the monthly profit
wolverine [178]

Answer:

(a)\frac{dP}{dt}=\frac{4800-1600t-240t^2}{(t^2+20)^2}

(b)P'(5)=-($4.54) Thousand

(c)P'(11)=-($2.10) Thousand

(d)The fifth Month

Step-by-step explanation:

Given the monthly profit model:

P(t)=\frac{240t-40t^2}{t^2+20}

(a)We want to derive a model that gives the Marginal Profit, P' of the book.

We differentiate

P(t)=\frac{240t-40t^2}{t^2+20} using quotient rule.

\frac{dP}{dt}=\frac{(t^2+20)(240-80t)-(240t-40t^2)(2t)}{(t^2+20)^2}

Simplifying

\frac{dP}{dt}=\frac{4800-1600t-240t^2}{(t^2+20)^2}

We have derived a model for the marginal profit.

(b) After 5 months, at t=5

Marginal Profit=P'(5)

\frac{dP}{dt}=\frac{4800-1600t-240t^2}{(t^2+20)^2}

P^{'}(5)=\frac{4800-1600(5)-240(5)^2}{(5^2+20)^2}

=-($4.54) Thousand of dollars

(c)Marginal Profit 11 Months after book release

P^{'}(11)=\frac{4800-1600(11)-240(11)^2}{(11^2+20)^2}

=-($2.10) Thousand of dollars

(d) Since the marginal profit at t=5 is negative, after the 5th Month, the profit starts to experience a steady decrease.

6 0
3 years ago
Alex types 3 pages in the same amount of time that Erica types 4.5 pages. If Alex and Erica start typing at the same time, how m
Archy [21]

Answer:

12.5

Step-by-step explanation:

4.5 - 3 = 1.5, so 11 + 1.5 = 12.5

7 0
3 years ago
Y = -2x<br><br> Please help
djyliett [7]
What’s the question?
8 0
3 years ago
How to tell whether its a prime or composite number
Lunna [17]
Prime numbers have only 2 factors 1 and its number for example:
2, 3, 5, 7, 11, 13, 17, 19, 23

Like this 1*2. Or 3*1

Composite numbers have more than two factors for example :
0, 4, 6, 8, 9, 10, 12, 14 15, 16..

For example 0 has many factors
0 times 3 0times 4

8 0
3 years ago
Read 2 more answers
The number of days (d) is equal
Svetradugi [14.3K]

Answer:

B

Step-by-step explanation:

d \:  =  \frac{h}{24}

h \:  = 24d

5 0
3 years ago
Other questions:
  • Find x? Nnnnnnnnnnnnnnnnnnnnnnn
    10·1 answer
  • Which equation represents the general form of a circle with a center at (-2,-3) and a diameter of 8 units
    6·2 answers
  • In 2006, Dunkin donuts company had 300,000 is donut sales. In 2007, sales were up 40%. What are Dunkin Donuts sales for 2007?
    8·1 answer
  • What is the factored form of the expression k^2 - 9h^2
    10·1 answer
  • Find the area of a square with sides of length 6.5 inches
    13·1 answer
  • A company is looking to fill its Board of Directors position. 3 positions will be for men, 2
    14·1 answer
  • Find the volume of the sphere. Either enter the exact terms of pi or use 22/7 for pi.The radius is 1/4 !
    10·1 answer
  • Find the polynomial.<br> (-1/3,4)<br> is the solution set of
    5·1 answer
  • A classroom had 16 computers. If the ratio of computers to ipads was 4 : 5, how many ipads does the classroom have?
    6·1 answer
  • Select the table that represents the ordered pairs that are plotted in the coordinate plane.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!