All categories

3 years ago

The length of a room is 2 1/2 feet more than its width. If the perimeter of the room is 80 feet, find its width and length?

Mathematics

1 answer:

horsena [70]3 years ago

4 0

Answer:

The width is 20.625 and the length is 19.375

Step-by-step explanation:

Let 2 1/2 + w = length

Let w = width

Equation:

2 1/2 + w + w = 80 Combine liked terms

2 1/2 + 2w = 80

-2 1/2 -2 1/2 Subtract 2 1/2 from both sides

2w = 77.5

÷ 2 ÷ 2 Divide 2 from both sides

w = 41.25

Length:

2 1/2 + 41.25 = 165/4 or 38.75

Width:

41.25

41.25/2 = 20.625

38.75/2 = 19.375

You might be interested in

Solve for x and then find the length of each segment. The measure of segment is equal to the sum of its smaller parts

leva [86]

Answer:

28hueu27ye6ry2u7wyee

8 0

3 years ago

Whats equivalent to 1/5

Juli2301 [7.4K]

To find equivalent numbers you multiply the top and bottom by the same number. Examples are: 2/10 (by 2), 3/15 (by 3), 4/20 (by 4), etc.

1 * 9 = 9
------------
5 * 9 = 45

So another is 9/45

hope it helps!

5 0

3 years ago

Pleaseee helpppp <br><br> What is the sum of -3 and -12

faltersainse [42]

Answer:

-15

Step-by-step explanation:

When adding together two negatives it works just as it would with positive numbers, just with the negative sign to properly negate it.

7 0

3 years ago

to rent a moving truck for the day it cost $33 +1 dollar for each mile driven write an expression that represents the cost in do

yKpoI14uk [10]

Answer:

33 + 1M

Step-by-step explanation:

5 0

3 years ago

Which of the following is the complete list of roots for the polynomial function f(x)=(x^2+6x+8)(x^2+6x+13)

MrMuchimi

Answer:

Step-by-step explanation:

$f(x)=(x^2+6x+8)(x^2+6x+13)\\\\f(x)=0\iff(x^2+6x+8)(x^2+6x+13)=0\iff\\x^2+6x+8=0\vee x^2+6x+13=0\\\\x^2+6x+8=0\\x^2+4x+2x+8=0\\x(x+4)+2(x+4)=0\\(x+4)(x+2)=0\iff x+4=0\ \vee\ x+2=0\\x+4=0\qquad\text{subtract 4 from both sides}\\\boxed{x=-4}\\x+2=0\qquad\text{subtract 2 from both sides}\\\boxed{x=-2}\\\\x^2+6x+13=0\qquad\text{subtract 13 from both sides}\\x^2+6x=-13\\x^2+2(x)(3)=-13\qquad\text{add}\ 3^2=9\ \text{to both sides}\\x^2+2(x)(3)+3^2=-13+9\qquad\text{use}\ (a+b)^2=a^2+2ab+b^2\\(x+3)^2=-4$

8 0

3 years ago

The length of a room is 2 1/2 feet more than its width. If the perimeter of the room is 80 feet, find its width and length?​

The length of a room is 2 1/2 feet more than its width. If the perimeter of the room is 80 feet, find its width and length?