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Alexeev081 [22]
3 years ago
7

Anita is making a curtain to surround a table. She bought 3 1/4 yards of fabric. Her total cost was $13. What was the cost per y

ard? (show your process)
Mathematics
2 answers:
Ratling [72]3 years ago
7 0
3.25y=13. Isolate y by dividing both sides of the equation by 3.25. So 3.25y/3.25=13/3.25. Your answer is therefore 13/3.25, or 4
yan [13]3 years ago
4 0
<h2>Answer:</h2>

The cost per yard of the fabric is:

                        $ 4 per yard

<h2>Step-by-step explanation:</h2>

It is given that:

Anita bought 3 1/4 yards of fabric.

This means that the length of the fabric she bought is: 13/4 yards.

Also, the total cost of the fabric is: $ 13

This means that the cost of one yard of fabric is:

          Total cost divided by the length of the fabric she bought.

i.e. cost of one yard of fabric is:

        =\dfrac{13}{\dfrac{13}{4}}\\\\\\=\$\ 4\ per\ yard

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2 years ago
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yKpoI14uk [10]

Answer:

1) A

2) min; min; max; max

3) y = x² + 5x - 3

Step-by-step explanation:

f(x) = x² + 2(x)(5) + 5² - 5² + 24

f(x) = (x + 5)² - 25 + 24

f(x) = (x + 5)² - 1

In ax² + bx + c,

if a > 0, it's a min

if a < 0, it's a max

y = ax² + bx + c

Using (0,-3)

-3 = a(0)² + b(0) + c

c = -3

y = ax² + bx - 3

Using (1,3)

3 = a + b - 3

a + b = 6

Using (-1,-7)

-7 = a(-1)² + b(-1) - 3

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7 0
3 years ago
The amount of chlorine in a swimming pool is proportional to the volume of water. The pool has 2.5 milligrams of chlorine per li
stira [4]

Answer:

There are <u>20,000 milligrams</u> chlorine in the pool.

Step-by-step explanation:

Given:

The chlorine per liter of water in the pool is 2.5 milligrams.

The  volume of water in the swimming pool is 8000 gallons.

Now, to find the quantity of chlorine in the pool.

Let the quantity of chlorine be x.

The gallons of water in the swimming pool = 8000.

The milligrams of chlorine per liter of water in the pool = 2.5.

According to question, the amount of chlorine in the swimming pool is proportional to the volume of water.

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Thus, x is equivalent to 8000.

Now, to get the quantity of chlorine by using cross multiplication method:

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<em>By cross multiplying we get:</em>

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Therefore, there are 20,000 milligram chlorine in the pool.

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3 years ago
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Step-by-step explanation:

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