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2 years ago

A kitchen is 12 ft. by 14 ft. with 10 ft. high walls. How much would it cost to put vinyl flooring in this room? $8.80 per ft

Mathematics

2 answers:

Feliz [49]2 years ago

8 0

Answer:

In my opinion the answer would be 520x.

Step-by-step explanation:

Let x be the price of wallpaper per square feet.

Dimensions of a kitchen are:

width: w = 12 ft

length: l = 14 ft

height: h = 10 ft

If you need to put wallpaper in the room, you will put it only on the walls. There are 4 walls in the kitchen: two walls which dimensions are 12 ft and 10 ft, and two walls which dimensions are 14 ft and 10 ft. Since walls are of rectangular shape, we will use the following formula for the area of walls:

A = 2 * w * h + 2 * l * h

A = 2 * 12 * 10 + 2 * 14 * 10

A = 240 + 280

A = 520 ft²

So, if 1 square foot costs x, 520 square feet will cost 520x

Luden [163]2 years ago

7 0

Answer: 520x I believe

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Twice a number decreased by 22 is 48. What is the number?

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Aleonysh [2.5K]

Answer:

A. $y=3x-10$

C. $y+6=3(x-15)$

Step-by-step explanation:

Given:

The given line is $6x+18y=5$

Express this in slope-intercept form $y=mx+b$ , where m is the slope and b is the y-intercept.

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Let us find the slopes of each lines.

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On comparing with the slope-intercept form, we get slope as $m_{A}=3$ .

Now, $m\times m_{A}=-\frac{1}{3}\times 3=-1$ . So, option A is perpendicular to the given line.

Option B:

For lines of the form $x=a$ , where, a is a constant, the slope is undefined. So, option B is incorrect.

Option C:

On comparing with the slope-point form, we get slope as $m_{C}=3$ .

Now, $m\times m_{C}=-\frac{1}{3}\times 3=-1$ . So, option C is perpendicular to the given line.

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On comparing with the slope-intercept form, we get slope as $m_{D}=-\frac{1}{3}$ .

Now, $m\times m_{D}=-\frac{1}{3}\times -\frac{1}{3}=\frac{1}{9}$ . So, option D is not perpendicular to the given line.

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