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Elena L [17]
3 years ago
8

A duck was given $9, a spider was given $36, a bee was given $27. Based off of this information, how much money would be given t

o a cat? How did arrive to that answer*
Mathematics
2 answers:
gizmo_the_mogwai [7]3 years ago
6 0

Answer:

28 should be the correct answer

Step-by-step explanation:

9 + 36 + 27 = 71

100 - 71 = 28

I am guessing the number was 100 as you did not give the correct data

Vika [28.1K]3 years ago
3 0

Answer:

$18.

Formula : (No. of legs *5) - (no.of legs)/2

A duck has 2 feet. It gets 2*5 - (2/2) = 10 - 1 = $9

A spider has 8. It gets 8*5 - (8/2) = 40 -4 = $36

A bee has 6 feet. It gets 6*5 -(6/2) = 30 -3 = $27.

Thus, a cat with 4 legs would get 4*5 - (4/2) = 20 -2 =$18

Please mark me brainliest!

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Step-by-step explanation:

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Step-by-step explanation:

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A fence must be built to enclose a rectangular area of 45 comma 000 ftsquared. Fencing material costs $ 3 per foot for the two s
Tatiana [17]

Answer:

150 feet by 300 feet.

Step-by-step explanation:

The fence is to enclose a rectangular area of 45,000 ft squared.

If the dimensions of the rectangle are x and y

Area of a rectangle = xy

  • xy=45000
  • x=\frac{45000}{y}

Perimeter of the Rectangle =2x+2y

Fencing material costs $ 3 per foot for the two sides facing north and south and ​$6 per foot for the other two sides.

  • Cost of Fencing, C=$(6*2x+3*2y)=$(12x+6y)

Substitute x=\frac{45000}{y} into the Cost to get C(y)

C=12x+6y

C(y)=12(\frac{45000}{y})+6y\\C(y)=\frac{540000+6y^2}{y}

The value at which the cost is least expensive is at the minimum point of C(y), when the derivative is zero.

C^{'}(y)=\dfrac{6y^2-540000}{y^2}

\dfrac{6y^2-540000}{y^2}=0\\6y^2-540000=0\\6y^2=540000\\y^2=\frac{540000}{6} =90000\\y=\sqrt{90000}=300

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x=\frac{45000}{y}=\frac{45000}{300}=150

Since x=150, y=300

The dimensions that will be least expensive to build is 150 feet by 300 feet.

6 0
3 years ago
Sweaters cost $42 each .For every 5 sweaters You buy,You get 1 sweater free.How much will a total of sweaters cost ?
solniwko [45]

<u><em>Note: I think you may have unintentionally missed to mention the amount of total sweaters for which we have to measure the cost. So, after a little research, I was able to find the complete question. So, I will answer your question based on the following completing question. Anyways, it would clear your concept hopefully.</em></u>

Here is the complete question:

<em>Sweaters cost $42 each. For every 5 sweaters You buy,You get 1 sweater free. How much will a total of 30 sweaters cost?  </em>

Answer:

The cost of 30 sweaters = $1050

Step-by-step explanation:

What to determine?

How much will a total of 30 sweaters cost?

Information Fetching and Solution Steps:

  • The cost of each sweater = <em>$42</em>
  • For every 5 sweaters You buy, you get 1 sweater free. It means you will be able to get 6 sweaters for the price of 5

As

The cost of 6 sweaters ⇒ The cost of 5 sweaters + 1 free = 42×5 = $210

So

If the cost of 6 sweaters = $210

Then

the cost of 30 sweaters = 210 × 5 = $1050

Therefore, the cost of 30 sweaters = $1050

<em>Keywords: cost</em>

<em> Learn more cost problems from brainly.com/question/13005346</em>

<em> #learnwithBrainly</em>

8 0
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