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miv72 [106K]
3 years ago
5

Can someone help me on #5

Mathematics
1 answer:
True [87]3 years ago
7 0
The answer is 135 dollars
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Question is in screenshot. Please answer it correctly
fomenos

a) You need to sell 12 or 29 dresses.

b) Any number between 2 and 39 dresses will give a positive profit.

<h3>How many dresses must be sold in order to make a profit of 3000 euros?</h3>

Here we know that the profit, in euros, as a function of the number of dresses sold is:

P(x) = -11*x^2 + 450*x - 800

Now, if you want to find how many dresses you need to sell to have a profit of 3000 euros, then you need to solve:

P(x) = 3000 = -11*x^2 + 450*x - 800

So we need to solve the quadratic equation:

-11x^2 + 450x - 800 - 3000 = 0

-11x^2 + 450x - 3800 = 0

The solutions are given by Bhaskara's formula:

x = (-450 ± √(450^2 - 4*(-3800)*(-11))/2*(-11)

x = (-450 ± 187.9)/(-22)

We have two solutions that give the same profit:

  • x = (-450 + 187.9)/-22 = 11.9 that can be rounded to 12.
  • x = (-450 - 187.9)/-22 = 28.99 that can be rounded 29.

Then if you sell either 12 or 29 dresses, you will get a profit of 3000 euros.

b) To make a profit you need to sell more than P = 0, so let's solve that first:

P= 0 = -11*x^2 + 450*x - 800

The solutions are:

x = (-450  ± √(450^2 - 4*(-800)*(-11))/2*(-11)

x = (-450  ± 409)/(-22)

The smaller solution is:

x = (-450 + 409)/-22 = 1.86 that can be rounded to 2.

(because you can't sell 1.86 of a dress)

The other solution is:

x =  (-450 - 409)/-22 = 39

So, between 2 and 39 dresses, you will make a profit.

If you want to learn more about quadratic equations:

brainly.com/question/1214333

#SPJ1

6 0
1 year ago
Multiply<br> your answer should be in a monomial standard form<br><br> (7h^3)(3h^7)
KonstantinChe [14]

Answer:

21 h^10

Step-by-step explanation:

(7h^3)(3h^7)

Lets multiply

7*3  h^3 h^7

When the bases are the same , we add the exponents (x^a * x^b) = x ^ (a+b)

21 h^(3+7)

21 h^10

5 0
3 years ago
Read 2 more answers
Fernando's insurance premiums are $350 per month. This year he also paid a $2500 deductible and 20% of $5000 for injuries from a
vekshin1

Answer:

huh?

Step-by-step explanation:

6 0
3 years ago
Solve the equation. −3=h+8÷2 h=?
Nimfa-mama [501]

Answer:

h = -7

Step-by-step explanation:

  1. 8 ÷ 2 = 4
  2. Plug 4 in: -3 = h + 4
  3. Subtract 4 from each side, so it now looks like this: -7 = h

I hope this helps!

6 0
3 years ago
What is 6 times 4/9?
Ainat [17]
2.666. The 6 is repeating
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3 years ago
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