All categories

3 years ago

PLEASE HELP

Mathematics

1 answer:

Readme [11.4K]3 years ago

5 0

Answer:

x=5

Step-by-step explanation:

You might be interested in

A store sells 1/4 pound of beef for $0.75. If u are having a party and need 6 pounds of beef for hamburgers,using the unit rate,

hodyreva [135]

1/4 pound beef, b = $0.75

=》 6 pounds beef = (6)/ (1/4) × b

=》 6 pounds beef = 24 × $0.75 =$18.00

8 0

2 years ago

The rate of growth of profit (in millions) from an invention is approximated by Upper P prime (x )equals x e Superscript negati

Alecsey [184]

Answer:

The function is $P(x) = \frac{1}{2} e^{-x^2} +0.016$

Step-by-step explanation:

From the question we are told that

The rate of growth is $P'(x) = xe^{x} - x^2$

The total profit is $P(2) =$ $25,000

The time taken to make the profit is $x = 2 \ years$

From the question

$P'(x) = xe^{-x^2}$ is the rate of growth

Now here x represent the time taken

Now the total profit is mathematically represented as

$P(x) = \int\limits {P'(x)} \, = \int\limits {xe^{-x^2}} \,$

So using substitution method

We have that

$u = - x^2$

$du = 2xdx$

$p(x) = \int\limits {\frac{1}{2} e^{-u}} \, du$

$p(x) = {\frac{1}{2} [ e^{-u}} +c ]$

$p(x) = {\frac{1}{2} e^{-x^2}} + \frac{1}{2} c$ recall $u = - x^2$ and let $\frac{1}{2} c = Z$

At x = 2 years

$P(x) =$ $25,000

Since the profit rate is in million

$P(x) =$ $25,000 = $\frac{25000}{1000000} =$ $0.025 millon dollars

$0.025 = {\frac{1}{2} e^{-2^2}} + Z$

=> $Z = 0.025 - {\frac{1}{2} e^{-2^2}}$

$Z = 0.016$

So the profit function becomes

$P(x) = \frac{1}{2} e^{-x^2} +0.016$

5 0

2 years ago

arsen [322]

Answer:

Step-by-step explanation:

3*-4

3 0

2 years ago

melanie michael has a salaried and exempt job. she earns $825 a week. one week she worked 46 hours. find her gross weekly earnin

valkas [14]

She earns 17.93$ per hour,

3 0

2 years ago

How to solve number 2

VLD [36.1K]

Answer................:8x^2-2x-1

3 0

2 years ago

Read 2 more answers