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stealth61 [152]
3 years ago
5

Hamid published a book of poems. He sold 35 copies in the first week for $10 per copy. He wanted to increase the price of

Mathematics
2 answers:
Natalija [7]3 years ago
6 0

After reading through the story problem, I ended up with this equation:

(35-2)(x+.5) =?

or

(35-2)(10+.5)=?

Explanation:

He sells 35 books for usual weeks. Since he is selling his books at $.50 more his average number of copies decreased by 2.

35-2 = 33

Next, we know that he adds $.50 for his price for each copy. If the price is $10 per copy than it looks like this:

$10+$.50= 10+.5

or if the price is not $10 it will be

$x+$.5= x+.5

marysya [2.9K]3 years ago
3 0

Answer:

y = -x^2 − 2.5x + 350

Step-by-step explanation:

y = (10 + 0.5x)(35 − 2x)

y = 350 − 20x + 17.5x − x^2

y = 350 − 2.5x − x^2

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777dan777 [17]

Answer:

4

Step-by-step explanation:

So you can have

An orange + pretzels

An orange + carrots

Apple + pretzels

Apple + carrots

I think this is what they are asking for but I'm not sure

4 0
3 years ago
the area of the rectangular roof on a house is 756 sq. in.The length of the house is 108. How many inches wide is the roof?
Nady [450]
Keep in mind:  L*W = A, and thus W = A/L.
                   756 sq in
Here,  W = -------------- = 7 inches.
                     108 in
3 0
3 years ago
A farmer decides to make three identical pens with 88 feet of fence. The pens will be next to each other sharing a fence and wil
Fudgin [204]

Answer:

The long fence, AC = 44 feet

4 shorter segments at 11feet each = 44 feet

Area = 484 ft^2

Step-by-step explanation:

The three pens will share one fence section parallel to the barn, we'll call it AB.  Each pen will need two side fence segments, from the front fence to the barn.  We'll call those portions AC.  We need four of them:  two for the outer sides and two more to divide up the space equally among the three pens.  The total area would be AB*AC.

We know that AC + 4AB = 88 feet.

or AC = (88feet - 4AB)

Area = AB(88feet - 4AB)

Area = 88AB - 4AB^2

To maximize the area, we can take the first derivative and set it equal to zero:

Area' = 88 - 8AB

0 = 88 - 8AB

AB = 11 feet

AC = (88 - 4AB)

AC = (88 - 44)

AC = 44 feet

The fours segments of fence:  

AC + 4AB = 88 feet

(44) + 4(11 feet) = 88feet

Area = 44' x 11 ft' = 484 ft^2

5 0
2 years ago
Question -4x - 9 = -13?
olganol [36]

<em>X= 1.</em>

<em>For this expression to be correct, you would have to make sure that -4 stays -4. Any negative number subtracted by a positive number makes it go farther down into the negatives as a result even if the 9 is positive.</em>

<em>Hope this helps and have a nice day.</em>

<em>-R3TR0 Z3R0</em>

8 0
3 years ago
ILL GIVE BRAINLIEST please please help (only help if u know the right answer)
Galina-37 [17]

Okay, to find the answer,

<em>All we need to do it multiply ! </em>

\frac{f}{-3.2} = 0.01

f = (0.01) × (-3.2)

f = -.032

I hope I helped :) Just comment if you have any questions and remember to vote me "brainliest" if you like my answer !!!

3 0
3 years ago
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