Mathematics Middle School

The length of a side of a square is given by the expression 2 +1, and its perimeter is 56.

Write and solve an equation to determine the value of x.
Calculate the length of a side of the square.

Answers

Answer 1

Answer:

x = 13/2

Step-by-step explanation:

the perimeter of the square = 4 (2x + 1) = 56 → (solve for x)

divide both sides by 4

2x + 1 =56/4  = 14

2x = 14 - 1 = 13 ⇒ x = 13/2

 

Answer 2

Answer:

a = 14

Step-by-step explanation:

P=4a

56=4a

/4 /4

14=a

Check:

56=4*14

56=56

correct ; )

Related Questions

What is the value of the expression below if z=6
2z²-8z-2

Please help if possible! Thank you!

Answers

Answer:

[tex]22[/tex]

Step-by-step explanation:

[tex]2 {z}^{2} - 8z - 2[/tex]

[tex]2 \times {6}^{2} - 8 \times 6 - 2[/tex]

[tex]2 \times 36 -8 \times 6 - 2[/tex]

[tex]72 - 8 \times 6 - 2[/tex]

[tex]72 - 48 - 2[/tex]

[tex]24 - 2 = 22[/tex]

Answer:

22

Step-by-step explanation:

We know z=6

2z²-8z-2

Take out the z for 6.

2(6)²-8(6)-2

1.  2(36)-48-2

2. 72-50

3. 22

What is the LCM of 5, 13, and 10?

130
650
50
65

Answers

Answer:

Hey ind

Step-by-step explanation:

i believe your answer is 130 :))

anyone know what i did wrong for this problem?

Answers

Answer:

I think that instead of the x beside the 5 (5x) it has to be a g. cuz in the next section it says: Answer for g variable. (g =...)

so instead of: 48 + 5x = 68.50

try: 48 + 5g = 68.50

hope it helps! have a good rest of ur day!

You used X instead of G?

A group of friends wants to go to the amusement park. They have no more than $170 to spend on parking and admission. Parking is $9, and tickets cost $23 per person, including tax. Write and solve an inequality which can be used to determine p, the number of people who can go to the amusement park.

Answers

9+23x=170
23x=170-9
23x=161
X=161 divide 23
X=7

CAN SOMEONE HELP ME WITH THIS

Answers

Answer:

The answer is no.

Step-by-step explanation:

8/18 equals 4/9 and not 1/3.

Since the first 2 x and y values are proportional, the last one is not, meaning x and y are not proportional.

Answer:

ITS no not yes

1/3 and 1/3 are the same thing

y is 3 times the amount of x

BUT 8/18 DOESNT EQUAL 1/3 SO THEY TRIED TO TRICK YOU

In order for a story to be considered professional news, journalists should:
A.
Dress as professionally as possible
B.
Back up their claims with data and documentation
C.
Make the most compelling points possible
D.
Write in a way that convinces their readers of their opinion

Answers

D is the correct awnser

The figure shows triangle PQR and some of its transformed images on a coordinate grid:

A coordinate grid is shown from positive 6 to negative 6 on the x-axis and from
Which of the four triangles was formed by a translation of triangle PQR?



A

B

C

D

Answers

a and b for a while lol
Answer is C since the quadratic equation is a+b+d the answer is C

The vertices of a figure are given. Draw the figure and its image after a dilation with the given scale factor. Identify the type of dilation.



28. B(3,3), C(3,6), D(6,6), E(6,3); k= 1/2

PLEASE HELP THIS IS DUE TOMORROW

Answers

Answer:

What’s the problem?

Step-by-step explanation:

I don’t have internet to go to north kern and I’m not sure why

Warren jarred 12 liters of jam after 3 days. How many days does Warren need to spend making jam if he wants to jar 20 liters of jam in all? Solve using unit rates.
____ days

I need help! Please....
(16 If Solve) :)

Answers

Answer:

12liters/3 days = 4 liters/1 day

Step-by-step explanation:

so if Warren continues to go at the same speed he will jar 20 liters in 5 days

D=Days

L=Liters of jam

12L÷3D=4  =  4L/1D

A 54-foot cable is hung from the top of a building that is 52 feet tall. The cable needs to be fastened 12 feet from the base of the building. Is the cable long enough? Explain.​

Answers

Answer:

Yes

Step-by-step explanation:

If the building is 52 feet tall then the cable can stretch from the top of the building to the bottom, so therefore if it is hung 12 feet from the base of the building it would only need to stretch 12 feet from bottom to top which it can do. Hope this helps :)

It is Long enough because the building is 52 feet tall and you only need 12 foot of cable

What is the area of the shaded region? IXL assignment

Answers

Answer: 100

Step-by-step explanation:

20*13 = 260

260/2 = 130

10*6 = 60

60/2 = 30

130-30 = 100

Answer:

100 ft²

Step-by-step explanation:

The area of the shaded region is the area of the outer triangle minus the area of the inner triangle.

For a triangle,

A = bh/2

A = 13 × 20/2 + 10 × 6/2

A = 130 - 30

A = 100

Answer: 100 ft²

mrs. jacobsen is a music teacher. she wants to order toy instruments online to give as prizes to her students. the table below shows the prizes.

25 items 50 items 80 items
whistles $21.25 $36.00 $60.00
Kazoos $10.00 $18.50 $27.20

Answers

Answer:  $0.13

Step-by-step explanation:

Answer:

0.40

Step-by-step explanation:

A board is 76 inches long. How long is it in feet and inches?

Answers

your answer is 6 feet 4 inches

Answer:

6.3 ft.

Step-by-step explanation:

plss help its for tomorrow !!!!

Answers

I think you put this in the wrong subject

Can ya'll help me with this, please?

Answers

Answer:

3/8

Step-by-step explanation:

when dividing fractions you flip the second fraction over and divide.

One over two divided by four over three is 15 over 8

Divide 4 11/16 ÷ 1 1/4
A. 2 1/8
B. 2 1/4
C. 3 7/16
Or
D. 3 3/4

Answers

Answer:

D.

Step-by-step explanation:

D. 3 3/4 is your answer.

Answer:

D. :)

Step-by-step explanation:

So you can do the keep, change, flip method to help.

So first, you keep the 4 11/16 or 75/16. Then, you change the division to mutilpation and then lastly you flip the 1 1/14 or 5/4 to 4/5.

So then the problem is 75/16 x 4/5. So, first you do 75 x 4 to get 300, then you do 16 times 5 to get 80. So now the problem would be 300/80.

So, now you divide 300 by 80 to get 3.75. And if you know, 3.75 is equal to 3 3/4.

Hope this helps love!! :)

Please help me!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

5

Step-by-step explanation:

It’s going to be 5 your welcome

Mr darling has $300 deducted from his checking account every month for her car payment. He also had $150 deducted every month for his insurance. After 1 year, by how much do these payments change his checking account balance

Answers

Step-by-step explanation:

1 year = 12 months.

so, 12 months of deducting $300 and $150 (= $450).

after 1 year these payments have reduced his account balance by 12×450 = $5400

Answer:

Step-by-step explanation:

1 year = 12 months.

$300 + $150 =$450

$450*12=$5400

Which expression is equivalent to:
c - 15c - 10 + 12c-8

A.2c + 18
B.2c-18
C.-2c-18
D.-2c + 18

Answers

Answer:

C

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

.....................

2: Tables and Chairs
Andre is setting up rectangular tables for a party. He can fit 6 chairs around a single table. Andre lines up 10 tables end-to-end and tries to fit 60 chairs around them, but he is surprised when he cannot fit them all.

PLEASE HELP ITS DUE TODAY

Answers

He needs to put 54 tables
He can’t fit them all because he can only put 4 chairs per table because it is rectangular

A rectangle has 4 sides therefore he can only put 4 chairs per table

There are 7 apples on a plate. When these apples are distributed to 7 children, one for each, an apple snows on the plate. How can this be?

Answers

one kid didn’t take the apple

Please help me with this

Answers

Answer:

1/40 pound is more um reasonable

1/40 pounds thxs sa points

the temperature on the ground during a plane's takeoff was 7° F. At 38,000 feet in the air, the temperature outside the plane was -36° F. Find the difference between these two temperatures, with the number only.

Answers

43 degrees farenheit

Sam has saved 140 sand dollars and wants to give them away equally to his friends. Find the total number of sand dollars each of Sam's friends will get if Sam gives them to 10 friends.

Answers

Answer:

140/10=14

Step-by-step explanation:

We have to use division because we want to EQUALLY give a share to 10 friends

So what is 140 divided by 10?

We get 14.

So sam will give 14 sand dollars to ten of his friends.

We can check our work by multiplying.

14x10= 140.

I hope this helped. :D

At the beginning of spring, Lydia planted a small sunflower in her backyard. The sunflower's height in inches, h, after w weeks, is given by the equation h=3.75w+14. What is the meaning of the h-value when w=1?

Answers

Answer:

Last option

Step-by-step explanation:

Here,

h = 3.75w + 14

=> h = 3.75(1) + 14

=> h = 17.75 inches

So,

We can conclude that this equation shows : How much the sunflower grows, in inches, each week.

H =17.75 is the answer

Kara and Nathan are each painting a poster for the school dance. Their posters have the dimensions shown in the table.

Student Poster Length (ft) Poster Width (ft)
Nathan L112 W112
Kara L334 W334

How many times greater is the area of Kara’s poster than Nathan’s? Write in simplest fraction form.

Answers

It’s 8.89317 times greater. Normally u find an area of a rect thru lw so j do that but make it a proportion. (334x334)/(112x112)=8.9317

Kara's poster is 8.89 times greater than Nathan's poster.

What is the area of the square?

The square is defined as a quadrilateral having all the sides equal to each other. The angle suspended by all the sides of the square is 360 degrees.

Given that the dimensions of Nathan's painting are L112 W112 and the dimensions of Kara's painting are L334 W334.

The areas will be calculated as below:-

Nathan  = 112 x 112 = 12544

Kara = 334 x 334 = 111,556

To calculate how many times greater the area of Kara’s poster than Nathan’s divide Kara's area by Nathan's area.

Kara / Nathan  = 111556 / 12544 = 8.89

Kara = 8.89 x Nathan  

Therefore, Kara's poster is 8.89 times greater than Nathan's poster.

To know more about the area follow

https://brainly.com/question/13389992

#SPJ2

Question #2, Help...?

Answers

Answer:

9(8w+9x-10)

72w+10x-90

Step-by-step explanation:

All you have to do is multiply 9 by everything inside the parentheses.

Hope it helps! :)

The graph of y=f(x) is shown below. Determine the value of x when f(x)=3?

Answers

Answer:  -3

===========================================================

Explanation:

Locate 3 on the vertical y axis number line. Draw a horizontal line through this y value until you hit one of the four marked points. You should land on point D. Then drop straight down until you get to the x axis. You should get to x = -3

So in short, f(-3) = 3

This is a reverse process compared to something like shown here

https://brainly.com/question/24999254

Check out the diagram below.

-3 your welcome loll

So hi, this is another tricky one for me, can someone help explain how to solve this problem? Thank you :]

Answers

Hi:) So the scale factor is 5.5 because 22 divided by 4 is 5.5!
Because the scale factor is 5.5 between the two rectangles we can multiply 3 by 5.5 and get 16.5 is x, your answer:)

Answer:

the scale factor is 5.5

Step-by-step explanation:

Please help me with this!

Answers

Answer:

4 16/21

Step-by-step explanation:

Apply the KFC method

Keep

Flip

Change

Answer: 16/21

Explanation:

To divide a fraction, you multiply by the reciprocal of that fraction.

4 4
_ x _
7 3


Multiply the fractions

16/21
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