1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marat540 [252]
3 years ago
5

The perimeter of a rectangle is

Mathematics
2 answers:
kondor19780726 [428]3 years ago
8 0
<h3 /><h3>verified \: answer  \sqrt}</h3>

Equation for Perimeter of a rectangle: Perimeter = 2W + 2L

<h3>Defining the variables, let</h3>

<h3>Width = x</h3><h3>Length = 2x+3 (3 more than twice the width)</h3>

<h3>Plugging everything into the equation</h3>

<h3>30= 2(x) + 2(2x+3) using the distributive property,</h3>

<h3>30=2x+4x+6 combining like terms</h3>

<h3>30=6x+6 subtracting 6 from both sides,</h3>

<h3>24=6x divide both sides by 6</h3>

<h3>4=x This means that the width is 4 m.</h3>

<h3>To get the length, use the expression L=2x+3 and plug in x = 4 that was already solved for</h3>

<h3>L=2(4)+3</h3>

<h3>L=8+3 = 11 m</h3>

<h3>So the dimensions of the rectangle are width is 4 m and length is 11 m.</h3>

salantis [7]3 years ago
7 0

Answer:

The perimeter of a rectangle is

30m. The length of the rectangle is

3 m more than twice the width. Find

the dimensions of the rectangle

a. 3m x 12m

b 4m x 11m

c 8m x 7m

d 6m x 9m

You might be interested in
pls help will give brainliest Rena used the steps below to evaluate the expression (StartFraction (x Superscript negative 3 Base
kaheart [24]

Answer:

  First "order of operations" mistake: step 2

  First arithmetic mistake: step 4

Step-by-step explanation:

As we understand Rena's work, she wants to simplify ...

  \left(\dfrac{x^{-3}y^{-2}}{2x^4y^{-4}}\right)^{-3}

for x = -1 and y = 2.

Her work seems to be ...

<u>Step 1</u>

  \text{Substitute $x=-1$ and $y=2$ into the expression}\\\\\left(\dfrac{(-1)^{-3}2^{-2}}{2(-1)^42^{-4}}\right)^{-3}\qquad\text{no error}

<u>Step 2</u>

  \text{Simplify the parentheses}\\\\\left(\dfrac{2^4}{2(-1)^4(-1)^32^2}\right)^{-3}=\left(\dfrac{2^2}{2(-1)^7}\right)^{-3}\qquad\text{order of operations error}

<u>Step 3</u>

  \text{Evaluate the power to a power}\\\\\dfrac{2^{-6}}{2^{-3}(-1)^{21}}\qquad\text{no error}

<u>Step 4</u>

  \text{Use reciprocals and find the value}\\\\\dfrac{1}{2^32^6(-1)^{21}}=\dfrac{1}{8\cdot 64\cdot (-1)}=\dfrac{-1}{512}\qquad\text{error: $2^3$ is used instead of $2^{-3}$}

_____

So, the first arithmetic error is in Step 4. However, the order of operations requires exponents be evaluated first. Doing that makes step 2 look like ...

  \left(\dfrac{-\dfrac{1}{4}}{2(1)\dfrac{1}{16}}\right)^{-3}=(-2)^{-3}\qquad\text{proper Step 2}

__

We expect your answer is supposed to be Step 4.

7 0
4 years ago
Kevin drew a scale drawing of a boarding school. The scale of the drawing was 1 millimeter : 3 meters. A building at the school
Yakvenalex [24]

Answer:

50 mm

Step-by-step explanation:

Using the proportion: 1mm/ 3m

<u>1mm</u>     <u> xmm</u>

3m        150m

150/3= 50

1(50)= 50

x=50mm

5 0
3 years ago
HELP ASAP please please please!
Sonja [21]

Answer:

$224-$28 = $196

$196 earned babysitting

Step-by-step explanation:

Hope this helps.

4 0
4 years ago
What is the solution to the equation 5(x-3) = 2(x+3)?
VikaD [51]
Answer:
x = 7


General Formulas and Concepts:
Order of Operations: BPEMDAS


Step-by-Step Explanation:
Step 1: Define
5(x - 3) = 2(x + 3)

Step 2: Solve for x
1. Distribute: 5x - 15 = 2x + 6
2. Subtract 2x on both sides: 3x - 15 = 6
3. Add 15 on both sides: 3x = 21
4. Divide both sides by 3: x = 7
8 0
3 years ago
Please will give brainliest and thanks for the problem
8_murik_8 [283]

Answer:

x=6

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • 6-^12×6^8×6^0 = what and how do I solve this problem
    14·1 answer
  • Write an expression to represent the pattern 19, 27, 35, 43
    11·1 answer
  • A rectangular goat pasture has dimensions represented by the expressions y – 4 and 4y^2-3y+5 .Find the area of the pasture.
    9·1 answer
  • Use the distributive property to find (x+1)(x+3)
    11·2 answers
  • Will mark the Brainliest !!!!! A team of 5 boys and 4 girls will be chosen from a group of 16 boys and 13 girls,
    14·1 answer
  • Find the volume of the cone when it's diameter is 8.4 feet and height is 6feet.​
    14·1 answer
  • Brainliest 4 whoever can tell me the correct answer to this question
    11·1 answer
  • What is the estimate value of 976 divide by 0.188
    7·2 answers
  • Given the graph of the quadratic function, identify the solutions.
    8·1 answer
  • Which of the following functions is graphed below?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!