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
STatiana [176]
3 years ago
12

What is the value of x if length is 3x-1 and width is x and the perimeter is 84

Mathematics
1 answer:
expeople1 [14]3 years ago
7 0

Answer:

x = 10.75

Step-by-step explanation:

To find the value of x, we need to know the equation for the perimeter of a rectangle.  This equation is:

P = 2L + 2W

Where P is the perimeter, L is the length, and W is the width.

We are given P = 84, L = 3x -1 , and W = x.  Now we just plug these values in and solve for x.

P = 2L + 2W

84 = 2 ( 3x - 1 ) + 2 ( x )

84 = 6x - 2 + 2x

84 = 8x - 2

86 = 8x

86 / 8 = x

43 / 4 = x

(40 + 3) / 4 = x

10.75 = x

Hence, the value of x = 10.75.

Cheers.

You might be interested in
Find the length of the third side. If necessary, write in simplest radical form.<br> 10<br> 7
oksian1 [2.3K]

Answer:

\sqrt{51}

Step-by-step explanation:

10²-7² (C squared minus B squared equals A squared) (basically Pythagorean theorem but reversed)

100-49= 51 (square the numbers and subtract)

\sqrt{51}  

6 0
3 years ago
What is the equation of the axis of symmetry do the quadratic function f(x) = -(x+4) (x-1)​
miv72 [106K]

9514 1404 393

Answer:

  x = -3/2

Step-by-step explanation:

The zeros of the function are the values of x that make the factors zero:

  x = -4, x = 1

The axis of symmetry is the vertical line halfway between these zeros.

  x = (-4 +1)/2 = -3/2

The equation of the axis of symmetry is x = -3/2.

8 0
3 years ago
What are the three choices equivalent to 27^4/3
12345 [234]

the answers are B,D and F

8 0
3 years ago
4 glue sticks cost $7.76 what equation would help determine the cost of 13 glue sticks
denis23 [38]
7.76/4 = 1.94x13=25.22
6 0
3 years ago
Read 2 more answers
I dont get this at all pls help
saul85 [17]

Answer:

its B i think

7 0
3 years ago
Other questions:
  • NEED HELP ASAP PLEASE
    13·1 answer
  • 2,500 into a scientific notation
    6·2 answers
  • Housing prices in a certain neighborhood average at $113.89 per square foot. If one house in this neighborhood is 1800 square fe
    14·2 answers
  • Solve for n round to the tenths place 14/21.2= n\15
    5·1 answer
  • Petrol at a place costs 187/ 4 Rs/litre. what is the cost of 35 litres of petrol ?
    5·2 answers
  • And the difference between the range and the mean (15. 13. 22, 18, 13. 12. 18, 16, 14, 18, 14)​
    6·1 answer
  • Determine the slope of the line that passes through the points (5, -1) and (5,-5)
    15·2 answers
  • Evaluate the function. Type only the answer.
    15·2 answers
  • A human hair was 0.000083 meters wide. Write this number in scientific notation.
    15·1 answer
  • What is the simplest form of the radical expressio √48x^4y^3? Assume x and y are positive.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!