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2 years ago

PLEASE HELP ME ILL RATE U 5 STARS PLEASEE

Mathematics

1 answer:

KonstantinChe [14]2 years ago

6 0

Answer: Ali is correct because all of the negatives are mostly in quadrant 2.

Step-by-step explanation:

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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

Write an equation in point-slope form for the line.

ipn [44]

Y - y1 = m (x - x1)

m = 4 , x1 = 1 and y1 = 3, so its

y - 3 = 4(x - 1)

3 0

4 years ago

mary pulls out a bead from a bag containing white, red, and yellow beads. she records the color and places it back into the bag.

Verdich [7]

P(white) = 27/100 = 270/1000

Therefore, in 1,000 pulls, we eaxpect 270 white beads,

7 0

4 years ago

Read 2 more answers

Correct answers only please!

lbvjy [14]

Answer:

$60

Step-by-step explanation:

Using the given formula :

I = P × R × t

I = 40 × 10/100 × 5

I = $20

His amount in 20 years = $40 + $20 = $60

6 0

3 years ago

In a certain region, the equation y=19.485x+86.912 models the amount of a homeowner’s water bill, in dollars, where x is the n

DanielleElmas [232]

Answer:

It's choice 2.

Step-by-step explanation:

y=19.485x+86.912

The 19.485 is the slope of the graph of this equation. This gives the rate of change of the amount of the bill (above $86.912) for each added resident (x).

5 0

3 years ago