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?​

Answers

Answer 1

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


Related Questions

Find the value of x that makes m ∥ n.

Answers

X is 60 degree :) . Brainliest pls

Answer:

x=60

Step-by-step explanation:

X+2x=180degree because it is co interior angle

3x=180

X=180/3

X=60.

Verification

X+2x=180

60+2(60)=180

60+120=180

How do I find the x in this special triangle?

Answers

Answer:

x=5

Step-by-step explanation:

a^2+b^2=c^2

a=4

b=3

c=x

4^2+3^3=x^2

16+9=x^2

25=x^2

5=x

how coordinates change when we add or subtract outside the function?​

Answers

Answer:

if c is positive, the graph is shifted up. If c is negative, the graph is shifted down. Informally: Adding a positive number after the x outside the parentheses shifts the graph up, adding a negative (or subtracting) shifts the graph down.

Step-by-step explanation:

hope this helps

The equation P = 2m + 15 represents the price P (in dollars) of a bracelet, where m is the cost of the materials (in dollars). The price of a bracelet is $115. What is the cost of the materials? Explain your reasoning.​

Answers

Answer:

50

Step-by-step explanation:

115 = p

115 = 2m + 15  

-15          -15

100 = 2m

/2      /2

50 = m

If you take away like I did in this method it will get you answer (backwards PEMDAS)

what are some strategies for rational numbers. ​

Answers

Answer:

Simplify

Step-by-step explanation:

Alright I'm stressed out because of school in order to get 10 points tell me how your day was

Answers

Answer:

It's been pretty boring

Step-by-step explanation:

Where I live, we are still in lockdown and it sucks :/

Answer:

it was ight

Step-by-step explanation:

please help me limited time

Answers

Answer:

its 1

Step-by-step explanation:

Answer:

its number one

Step-by-step explanation:

thank you and I'm sure


Solve the system of equations below.
2x - y = 26
3x - 2y = 42

Here are the answer choices

A. (8,1)
B. (3,2)
C. (10,-6)

Answers

It’s would have to be b.

find the next numbers 5, 1, 7, 0, 9, -1, 11...

Answers

Answer:

7,13,6

Step-by-step explanation:

you must take the number minus 4 then add 6 minus 7 then add 9, minus 10 then add 12.

Need help pls I don’t really remember functions if anyone could pls help that would be great pls and thank you.

Answers

The third one is not a function

because there is two different outputs (y values) for on input (x value). The X value 4, can’t have and input of 1 and 2

Hi I need help asap ! Brainlyest included
I will Not give brainlyest if not right . Pls and THANK YOU!!!!

Answers

Answer: Above 16 = 4. Under 5 = 10. Above 8 = 4 or 2. THIS IS ALL I KNOW-

Step-by-step explanation:

Yeah this is rlly old work I didn’t do anddd I don’t remember how to do any of it cs I’m so far ahead so help? The first person I’ll mark as brainliest

Answers

Answer:

125x

Step-by-step explanation:

5x*5x*5x

5x*5x = 25x

25x*5x

125x

If it costs Melissa $8.20 to make a pie, how much should she charge for a pie? Round your answer to the nearest cent if necessary.

Answers

Answer:

$16.40

Step-by-step explanation:

PLEASE HELPP WITH THIS QUESTION

Answers

Well I just learned about this so I think it’s Paulo!
Hope this helps
P.s, no explanation because I am bad at explaining these :)

Find the value of x. Then find the angle measures of the triangle.
3x°
40°
Sum of angle
measures: 180°

Answers

3x + 40 + x = 180
-40. -40
——————————-
4x. 140
—. ——-
4. 4

x = 35

Answer:

x=35°

3x= 105°

Step-by-step explanation:

[tex]40 + 3x + x = 180[/tex]

[tex]40 + 4x = 180[/tex]

[tex]4x = 180 - 40[/tex]

[tex]4x = 140[/tex]

[tex]x = \frac{140}{4} [/tex]

[tex]x = 35[/tex]

[tex]3x = 3(35) \\ 105[/tex]

Can the intersection of a plane and a line segment be a ray ?

Answers

Answer:

No, it can not. I searched Brainly and people have asked this question before which always ended in the same answer, no.

Step-by-step explanation:

17
Solve the inequality and graph the solution.
3(x+5) > 12

Answers

Answer:

x > -1

Step-by-step explanation:

3(x + 5) > 12

Distribute

3x + 15 > 12

Subtract 15 to both sides

3x > -3

Sivide both sides by 3

3x/3 > -3/3

x > -1

Hope this helps and pls do mark me brainliest if you can:)


What is the value of y?
A.5
B.2
C.9
D.3

Answers

Assuming those are 45 degrees it would have to be 9 since the sides are the same.

F(x)=2/3x+9x
What is the value of f(12)?

Answers

Answer:

116

Step-by-step explanation:

To find f(12), plug in 12 as x in the equation:

f(x) = 2/3x + 9x

f(12) = 2/3(12) + 9(12)

f(12) = 8 + 108

= 116

So, f(12) = 116

3(x+5)=15
A.3
B.0
C.1/3

Answers

Answer:

x=0

Step-by-step explanation:

letter B

Answer:

B

Step-by-step explanation:

Take the three outaide the parentheses and distribute to both terms inside the parentheses. You would then get 3x+15= 15

subtract 15 from the left and right.

3x=0

Which means that x=0/3

So x=0

George bought 2.45 pounds of tofu and 1.62 pounds of fish. How many more pounds of tofu did he buy than fish?

Answers

Answer:

George has a seafood addiction

Step-by-step explanation:

Use the percent proportion.

1. What number is 120% of 60?

A 20

B 72

C 7.2

D 2

Answers

Answer:

72

Step-by-step explanation:

use a percentage calculator! Hope this helped! <3

What is x- value of point A

A or B?

Answers

It should be A!! Hope this helps!!

5) f (x) = −3x + 5
g(x) = 3x2 − 2x
Find f (x) + 5g(x)

A) 15x2 − 13x + 5
B) 5x3 + 12x − 5
C) 3x2 + 17x + 25
D) 3x2 − 17x + 25

Answers

what is the actual equation or question? so o can answer

You have point D (4, 2) that is rotated 180 degrees about the origin, what are the coordinates of D'? Type answer as an ordered pair: (x, y)

Answers

Answer:

-4,-2 I think

Step-by-step explanation:


Original Price $35
Sale Price $28
Find the percent of discount.

Answers

Answer:

-20%

Step-by-step explanation:

The percentage decrease from 35 to 28 is -20%.

It is a decrease that's why it is a negative number

20% discount is the percentage that was discounted from $35 giving you the sale cost of $28

help idk how to do math

use the distributive property

Answers

Answer:

Distributive property is when you multiply or add the numbers in the parentheses equally to the number outside the parentheses.

That probably isn't a good answer, here's what I found on google:

To “distribute” means to divide something or give a share or part of something. According to the distributive property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.

Step-by-step explanation:

I'll do #10 as an example:

(x-5)y

distribute the numbers-  y(x)-y(5)

without the parentheses-  yx-y5

you can't really get an answer by multiplying a number and a variable, or a variable and a variable, so you just leave them and take the parentheses.

Here's #11:

-4(2a-3b+c)

distribute the numbers-  (-4*2a)-(-4*3b)+(-4c)

solve-  -4*2= -8

-4*3= -12

-8a-(-12)b+4c

*I dunno how to use parentheses for negative numbers but what I did for distributing is pretty much the same thing

Hope this helps you.

what two numbers multiply to -36 and add up to 5

Answers

Answer:

9 and -4

Step-by-step explanation:

Finding these 2 numbers can be found by guessing and checking. By doing this, it will get you the numbers 9 and -4.

First, test if they multiply to -36:

9(-4)

= -36

Then, check if they add up to 5:

9 + (-4)

= 5

So, 9 and -4 are the 2 numbers that multiply to -36 and add to 5

Marc enjoys running. The graph shows how far Marc ran over time. Use equivalent ratios to find how far Marc ran in 7 minutes. (You need a label with your answer to get full credit. *

Answers

Answer:

420

Step-by-step explanation:

The graph bellow shows that 60 per minute is the distance that marc ran

so i would have to multiply

60 by 7 which equals 420

Hope this helps

Math pls help for 26 points

Answers

Answer:

77

Step-by-step explanation:

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