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Pachacha [2.7K]
3 years ago
13

Cynthia Besch wants to buy a rug for a room that is 20 ft wide and 31 ft long. She wants to leave a uniform strip of floor aroun

d the rug. She can afford to buy 350 square feet of carpeting. What dimensions should the rug​ have?
Mathematics
2 answers:
AlekseyPX3 years ago
8 0

Answer:

The dimensions should the rug​ have: length = 25 feet and width of 14 feet.

Step-by-step explanation:

Dimension of the room is 20 ft wide and 31 ft long

Area of rug purchased by Cynthia Besch = A=350 ft^2

Suppose she leave strip of floor which is x ft thick.

Length of the rug= l = (31-x) ft

Width of the rug= w = (20-x) ft

Area of the rug,A = l × w

350 ft^2= (31-x) ft \times (20-x) ft

350=620-51x+x^2

x^2-51x+270=0

x^2-45x-6x+270=0

x(x-45)-6(x-45)=0

(x-45)(x-6)=0

x = 45 , 6

x = 6 (accept), x= 45 ,(reject, larger than length of the room )

Length of the rug= l = (31-x) ft = 31 - 6 ft = 25 ft

Width of the rug= w = (20-x) ft = 20 - 6 ft = 14 ft

lara31 [8.8K]3 years ago
5 0
20*31=620
620/2=310
20/2=10
31/2=15.5
The dimensions should be  10*15.5

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A truck rental company rents a moving truck One Day by charging $39 + 0.09 per mile write a linear equation that relates the cos
Ivanshal [37]

Answer:

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Step-by-step explanation:

Given

Base\ Charge = \$39

Rate = 0.09 per mile

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The total charges (c(x)) is: the base charge + the rate * number of miles (x).

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c(x)= 39 + 0.09 * x

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Solving (b): Cost of rent, if miles = 160

This implies that x = 160

So, we have:

c(x) = 39 + 0.09 x

c(160) = 39 + 0.09 *160

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4<br> Select the correct answer.<br> Which of these mappings is a function?
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3 0
3 years ago
Which of these ordered pairs is a solution to the linear inequality 3y - 2x &gt; 8?
Tanzania [10]
For this case we have the following inequality:
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3 0
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A Pac-Man poster is the shape of three-fourths of a circle with a diameter of 18 inches and two sides that are 9 inches each. Wh
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Given that:

A Pac-Man poster which is having three fourth of a circle and there are two sides.

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To find:

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Perimeter of a circle is given by the formula:

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r is the radius of the circle.

Radius is half of perimeter.

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