Mathematics Middle School

The perimeter of a rectangle is 40 feet its length is 12 feet what is the width

Answers

Answer 1

Answer:

8 feet

Step-by-step explanation:

In a rectangle

length (L) = 12 feet

perimeter (p) = 40 feet

width (b) = ?

We know

p = 2(L + b)

40 = 2 ( 12 + b)

40/2 = 12 + b

20 = 12 + b

b = 20 - 12

b = 8 feet

Answer 2

Answer:

12 feet

Step-by-step explanation:

Perimeter of rectangle = 2( l + b )

40 = 2( 12 + b )

40 = 24 + 2b

40 - 24 / 2 = b

12 feet = b (width)

Related Questions

Kira made$234 for 18 hours of work.
At the same rate, how many hours would she have to work to make $104?

Answers

8 hours. 234 divided by 18 = 13, she makes $13 an hour. So $104 divided by $13 an hour would be 8.

Answer:

5 hours and 30 seconds

Step-by-step explanation:

(11-8)3-2x6
please help

Answers

Answer:

11- 8 is 3

so then

(3)3-2x6 and 3 x 3 is 9

and den

9 - 2 x 6 , 2 x 6 is 12

and now i dont know  but

9- 12 is -3 ??? i might of done something wrong so if i did

Step-by-step explanation:

Answer:

-3

Step-by-step explanation: Don't forget to use PEMDAS

Parentheses

Exponents and Roots

Multiplication

Division

Addition

Subtraction

11-8=3, 2x6=12, 3(3)=9, and 9-12=-3

I hope this helps, and have a great day!

Find the value of x.

Answers

The value of “x” is 8

Please help giving brainliest

Answers

Answer: 85.6

Step-by-step explanation:

Wait how did you find the sales tax OwO

please help me with this

Answers

Answer:

4

Step-by-step explanation:

sndhdjxnxbsnndnd but the. you eat the swlt

The answer is four you just have to divide to get your answer!

It is not B. I will give brainliest to the first person to answer

Answers

Answer:

c

Step-by-step explanation:

400 students were surveyed. 20 people said their favorite holiday is Thanksgiving. What % named Thanksgiving?

Answers

The answer should be 5 because if there were 100 it would be 20

There are 5% people said their favorite holiday is Thanksgiving.

What is Percentage?

A relative value indicating hundredth part of any quantity is called percentage.

Given that;

400 students were surveyed.

20 people said their favorite holiday is Thanksgiving.

Now,

Total students = 400

Thanksgiving people = 20

Hence, Percentage of Thanksgiving people = 20/400 × 100

                                                                   = 20/4

                                                                   = 5%

Thus, There are 5% people said their favorite holiday is Thanksgiving.

Learn more about the percentage visit:

https://brainly.com/question/19247356

#SPJ6

Find the perimeter of the window

Answers

Answer:

40 cm obviously

Step-by-step explanation:

40 cm add up the around area

please help 7 points for who every answers queston

the perimeter of an equilateral triangle 6n-15. write an expretion the langth of each side.

Answers

Answer:

Step-by-step explanation:

Ok so in order to find perimeter you hhave to add the a+b+c in order to find the preminter of a triangle so just add them togather and you will find yor answer.

can somebody help me and explain a bit i-

Answers

Answer:

Step-by-step explanation:

Yes it’s a solution because if you plug in 11 for j you get 86 = 86

11 is your plug in for the

This question is 15 points so please help my friend is in 6th grade and needs homework help ASAP

Answers

The answer's in the picture; hope this helps <3

I need help on these two! Please and thank you! (:

Answers

Answer:

Answers and methord in the pic

the first one is 2002.77 and the second should be 1608.5 just so u know it’s very easy it’s pie x radius squared times height so if u learn how to do that on a calculator you should be good in the future

Rewrite the equations using a negative exponent!! ill give brainliest, any random or incomplete answers will be reported!!

Answers

Answer:

11. [tex]x^{-2}[/tex]

12. [tex]m^{-3}[/tex]

13. [tex](x+2y)^{-4}[/tex]

14. [tex](x+3y)^{-2}[/tex]

15. [tex](x+y)^{-3}[/tex]

16. [tex](2x+3y)^{-6}[/tex]

17. [tex](-3m-9)^{-3}[/tex]

18. [tex]x^{-4}[/tex]

Step-by-step explanation:

In all of them you just subtract the bottom exponent from the top exponent.

Answer:

2348299392 xx

What is (9) 7 written in expanded form?
pls hurry

Answers

Answer:

90,007

Step-by-step explanation:

Answer:

9007

Step-by-step explanation:

the nine is in the hundreds place so here is the answer that you wanted to know

What is the y-value of point A?​

Answers

Answer:

1

Step-by-step explanation

1,6

Need help please thanks

Answers

Answer:

A

Step-by-step explanation:

You win a prize and are offered two choices. Which of the choices could be represented by a linear equation?

Choice A: $20 on January 1, $60 on February 1, $180 on March 1, $540 on April 1, and so on, with the amount tripling each month.

Choice B: $100 the first month, $300 the second month, $500 the third month, and so on, with $200 added each month.

answer choices:
Choice A
Choice B
Not enough information is given
Neither is linear

Answers

Answer:

choice b because it is constantly going up the same amount.

It’s Choice b. Yeah :)

The more accurate the better, giving brainliest to best answer

Answers

The trapezoid has a height of 3in. a shorter base measuring 2.75 in and a longer base measuring 4.25 in. the total area is 10.5 in^2
10.5in^2.....................

What is the probability that both spinners land on red or orange?

Answers

the probability is 1/3

Answer:

What is the probability that both spinners land on red or orange? the answer is 1/3

Step-by-step explanation:

Find the quotient of the problem using the area model strategy. After you have worked out your problems on a sheet of paper, you must submit a picture or video of your work.
849 divided 15 in area model strategy pls help ty

Answers

Answer:

56 with re9

Step-by-step explanation make a square on a paper make 3 line on top of each line put 800 40 and 9 on the side put 15 search up 15 dived by 800 and 40 dived by 15 then 9 add it all up the yo go give me brainlist

56 with r9e or something

Explanation NEEDS to be included! No fake answers please! Brainliest for the best! Thank You!


Question: This pile of gold (photo below) is worth $50,000. Shrink the pile ( I already did it for you:) so that it is 18% of its height.

How much will the gold be worth? Explain your thinking.

Answers

Answer:

I beleive the answer is $9000

Step-by-step explanation: What is 18% of 50000?

Y is 18% of 50000

Equation: Y = P% * X

Solving our equation for Y

Y = P% * X

Y = 18% * 50000

Converting percent to decimal:

p = 18%/100 = 0.18

Y = 0.18 * 50000

Y = 9000

9000 is how much is taken off, just take 18% of 50000=9000
50000-9000=41,000.
After 18% is taken off it’s $41,000
It asked for how much the gold would be worth not how much is taken off.

While completing a DLA test virtually, Deidra answered 8 out 30 questions incorrectly. If the ratio remains constant, how many questions should Deidra answer correctly out of 45 questions?

Answers

Answer:

12

Step-by-step explanation:

Find the percent of change for #1-5
1. Xbox one goes from $399 to $199.
2. A slice of pizza increases from $1.25 to $3.50
3. The price of a Halloween costume goes from$25 to $9.99
4. The price of a bagel goes from $0.75 to $1.10
5. 16 bagels to 0 bagels.

Answers

Answer:

1 50.1253%decrease

Step-by-step explanation:

[tex]\frac{399-199}{399}[/tex]

=[tex]\frac{100}{399}[/tex]

=0.501253

=50.1253

guysss i need helppppp.... please answer all of them and if u dont know please dont answer

Answers

Answer:

This says middle school.. What grade are you in? I am in 8th grade and do not know any of that...

I have never seen work near that.........

i’m in 10th and i’ve never seen that.

i need help with this

Answers

Answer:

Step-by-step explanation:

you got this

Answer:

I think d  but if I'm wrong I'am so sorry

Step-by-step explanation:

No, because the slope of OR time the slope of QR does not equal 1.

Brainliest plz

What is the reciprocal of 18/7?

a 8/17
b 17/8
c 7/18
d 18/1

Answers

The answer is c, 7/18
The correct answer is C 7/18

Which of the following is the best estimate of 12 18/21?

A. 12
B. 12 1/2
C. 13
D. 13 1/2

Answers

Answer:

Your simplified fraction would be 12 6/7 so I’d say *C* because that’s the closest to the simplified fraction

Step-by-step explanation:

im  just explain

Answer:

C

Step-by-step explanation:

A grocery store sells avocados for $1.25 each. The graph shows the cost for different numbers of avocados.

Drag each list, statement, or equation below to show whether it describes the independent quantity, the dependent quantity, or neither.

Answers

I don’t know if this is right or not so, sorry if it’s wrong ;-;

1,2,3,4,5 = independent

c=1.25a = neither

$1.25, $2.50, $3.75, $5.00, $6.25 = dependent

Number of avocados = independent

Cost of avocados = dependent

If this is right then I’ll put the explanation in the comments, again sorry if it isn’t.

Which of the following equations have two complex solutions? Select all that apply.
(CHECK IMAGE ATTACHED)

Answers

Correct Answer: A and F!!

A- 3x^2+ 5x + 10=0

F- 2x^2 + 12 = -9x

Step-by-step explanation: Just did it and it’s right, hope that helped!! :)

The equations that have two complex solutions are 3x^2 + 5x + 10 = 0 and 2x^2 + 12 = -9x

For a quadratic equation to have a complex solution, hence the discriminant must be less than zero.

The discriminant is expressed as:

D = b^2 - 4ac

For the equation 10x^2 - 10 = 0

D = 0^2 - 4(10)(-10)

D = 400

Option B is false.

For the equation 3x^2 + 5x + 10 = 0

D = 5^2 - 4(3)(10)

D = 25 - 120

D = -95

Since D < 0, hence the equations 3x^2 + 5x + 10 = 0 have two complex solutions

For the equation 2x^2 + 12 = -9x

D = 9^2 - 4(2)(12)

D = 81 - 96

D = -15

Since D < 0, hence the equations 2x^2 + 12 = -9x have two complex solutions

Learn more on quadratic equations here: https://brainly.com/question/1214333

PLEASE HELP I'M BEING TIMES!! (UNIT RATE!!!!!)

Find the unit rate if 6 chocolate chip cookies have 426 calories. Show the answer in fraction and word form.

a.There are 71 calories per cookie.
b.There is 1 calorie per 71 cookies.
c.There are 61 calories per cookie.
d.There are 426 calories per 6 cookies.

Answers

Answer:

71 cals/ cookie

Step-by-step explanation:

426 divided by 6 equals 71. hope this helps. good luck

I think it’s A
426/6 = 71/1
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