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
Flura [38]
3 years ago
11

The length of a rectangle is 4 centimeters less than twice it’s width. The perimeter of the rectangle is 34vm. What are the dime

nsions of the rectangle?

Mathematics
2 answers:
IrinaVladis [17]3 years ago
5 0

l = 2w - 4

Because we're solving for 2l + 2w, that can be simplified to

2(2w - 4) + 2w = 34

4w - 8 + 2w = 34

6w - 8 = 34

6w = 42

w = 7

Knowing this, we can input w:

2(7) + 2l = 34

14 + 2L = 34

2l = 20

l = 10

L = 10, W = 7, Option C

Over [174]3 years ago
3 0

To begin to solve this question, we need to express the lengths in terms of width of the width in terms of length. Since the question says that the length was 4 centimeters less than twice the width, that means that the length is equal to 4 centimeters less (minus) twice the width (times two). That means that l = 2w - 4. We also know that the perimeter is 34cm.

The formula for the area of a rectangle is 2l + 2w, or 2(2w - 4) + 2w. Since the perimeter is 34, that means that:

4w - 8 + 2w = 34

Combining like terms and moving the numbers to the other side, we get:

6w = 42

w = 7

Plugging in the value of w in the formula for the length, we get that l = 2 (7) - 4 = 14 - 4 = 10. That means that the correct answer is C.

You might be interested in
What is the slope of a line that is perpendicular to the line y = x + 4? The slope of the line is ______?
serg [7]
Slopes of perpendicular lines are opposite reciprocals of each other. The slope of the given equation (which is in slope-intercept form) is 1, the invisible coefficient of x. The opposite reciprocal of 1 is -1, thus the slope of a line perpendicular to the line y = x + 4 is -1.

Hope this helps.
8 0
3 years ago
The property tax on a house, t, is directly proportional to the assessed value, v. If the tax on the house with an assessed valu
Brut [27]

Answer:

3150

Step-by-step explanation:

2325/155,000 = 0.015 = 1.5%

210,000 x 1.5% = 210,000 x 0.015 = 3150

8 0
2 years ago
A cylinder's volume can be calculated by the formula V=Bh, where V stands for volume, B stands for base area, and h stands for h
Anastaziya [24]

Answer:

h = 3x^5-3x^2-10\text{ units}

Step-by-step explanation:

We are given the following in the question:

Volume of cylinder =

V=Bh

where B is the area of base and h is the height of cylinder.

Volume of cylinder =

V = 6\pi x^7-6\pi x^4-20\pi x^2

Base area =

B = 2\pi x^2

We have to find height of cylinder.

h = \dfrac{V}{B}\\\\h = \dfrac{6\pi x^7-6\pi x^4-20\pi x^2}{2\pi x^2}\\\\h = 3x^5-3x^2-10\text{ units}

Thus, the height of cylinder is 3x^5-3x^2-10 units.

6 0
2 years ago
Read 2 more answers
Mia has n pairs of earrings. She receives 3 more pairs of earrings. Which expression represents the number of earrings Mia has n
kvv77 [185]
I believe the correct answer from the choices listed above is option D. The expression that would represent the number of earrings Mia has now would be n+3. It should be the sum of n earrings she originally had and the additional 3 earrings. Hope this answers the question.
4 0
2 years ago
Read 2 more answers
5. Evaluate the function for the given variables.
UkoKoshka [18]

Answer:

C. f(5) = 13 and f(-3) = -3

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 2x + 3

x = 5

x = -3

<u>Step 2: Evaluate</u>

x = 5

  1. Substitute:                    f(5) = 2(5) + 3
  2. Multiply:                        f(5) = 10 + 3
  3. Add:                              f(5) = 13

x = -3

  1. Substitute:                    f(-3) = 2(-3) + 3
  2. Multiply:                        f(-3) = -6 + 3
  3. Add:                              f(-3) = -3
7 0
3 years ago
Read 2 more answers
Other questions:
  • A graphic artist earns $22 an hour and she works 40 hours a week. What is her weekly wage
    5·2 answers
  • Ethanhunt only answer pls don't answer just don't if u not ethanhunt don't bother pls don't
    10·2 answers
  • You insurance policy on your car costs $600 a year. If you total your vehicle, you insurance company will pay $25,000 towards a
    6·1 answer
  • The number of daily sales of a product was found to be given by S = 600xe−x2 + 600 x days after the start of an advertising camp
    15·1 answer
  • Convert 0.0008 as a fraction in its simplest form​
    5·2 answers
  • Find the quotient of x^3 + 4x^2 - x - 4 divided by x + 1
    11·1 answer
  • HELP ASAP! GIVING BRAINLY IF CORRECT
    9·2 answers
  • Rhonda deposited $3000 in an account in the Merrick National Bank, earning 4.2% interest, compounded annually. She made no depos
    12·1 answer
  • The first day of August in the first day of July combined account for 75% of the sales on the first day of the month from July t
    15·1 answer
  • [PLEASE ANSWER ASAP 20 PTS] The entrance fee to a circus for a child is RM(3x-y). The entrance fee for an adult is RM2y more tha
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!