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ad-work [718]
4 years ago
15

An architect is designing a building each floor will be 12 ft tall. Write an expression for the number of floors the building ca

n have for a given building height. Tell what the variable in your expression represents.
Mathematics
1 answer:
Svet_ta [14]4 years ago
8 0

Answer:

\frac{h}{12}

Where "h" is the height of the building.

Step-by-step explanation:

For this exercise it is important to read and analize carefully the information provided.

According to the data given in the exercise, the height of each floor the arquitect is designing is 12 feet.

You want to know the number of floors of 12 feet tall that building can have for a given building height.

Then, you can let "h" represents the height of the building. This will be the variable in the expression.

In order to find the number of those floors that the building can have for "h", you need divide this height by the height of each floor.

Therefore, you can determine that the expression asked in the exercise is the following:

\frac{h}{12}

Where "h" is the height of the building.

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Find the area of a rectangle with the length = 4x and the width = x - 7.
galina1969 [7]

Answer:

4x^2 - 28x

Step-by-step explanation:

area = length * width

a = 4x * (x-7)

4x^2 - 28x

8 0
2 years ago
Show that the credit card number<br> 4306 0912 4887 1457 is valid/invalid.<br> Explain how you know.
elena-s [515]
Step 1a. For a card number with an even number of digits (e.g., Visa or MasterCard), double alternating digits starting with the first digit in the sequence.
Step 1b. For a card with an odd number of digits (e.g., American Express), double alternating digits starting with the second digit in the sequence.
Step 2. If the doubling resulted in a number with two digits, add them together to get a single digit number
Step 3. Now go back to the original credit number and replace the digits that you doubled with the new value — either the doubled value, or the doubled value with the digits added together — and add it all up.
Step 4. Check to see if the sum is evenly divisible by 10 (you can simply look to see whether or not it ends with a zero).
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7 0
3 years ago
Write the standard form of the line that passes through the given points. Include your work in your final answer. Type
bekas [8.4K]

9514 1404 393

Answer:

  5x -3y = 44

Step-by-step explanation:

We choose to start with the form ...

  (Δy)x -(Δx)y = (Δy)(x1) -(Δx)(y1) . . . . . where Δy = y2 -y1 and Δx = x2 -x1

For this purpose, it is convenient to choose y2 > y1, so we have ...

  Δy = -3 -(-8) = 5

  Δx = 7 -4 = 3

  5x -3y = 5(4) -3(-8)

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7 0
3 years ago
Which ordered pair in the form (a, b) is a solution of this equation?
Evgen [1.6K]

3a - 4b = 21


check (-2 , -3)


3(-2) -4(-3) =21


-6 +12  = 21


6 does not = 21  so NO


check (0 , 7)


3(0) -4(7) =21


0-28=21


-28 does not equal 21  so NO


check (-3 , -2)


3(-3) -4(-2) =21


-9 +8  = 21


1 does not = 21  so NO


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21  = 21

Choice D

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Answer:

i think b

Step-by-step explanation:

7 0
3 years ago
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