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
Ilia_Sergeevich [38]
3 years ago
12

The lenght of a rectangle is 4 cm less than three times the width. the perimeter is 64 cm

Mathematics
2 answers:
dybincka [34]3 years ago
5 0
Let the width be x cm.
Then length=3x-4 cm.
Its perimeter is 64 cm.
We know that perimeter of a rectangle= 2(length+width)
So,
2(3x-4+x)=64
6x-8+2x=64
6x+2x=64+8
8x=72
x=9
Therefore,
length=(3×9-4)cm=(27-4)cm=23 cm.
Width=9 cm.
marusya05 [52]3 years ago
3 0
Let w be the width and l the length and 32 half of the perimeter
4-3w=32
-4        -4
--------------
-3w   =28
------   ------
  3         3

-1w     9 1/3
------    -------
  -1        -1
    w  = -9 1/3
The Width is -9 1/3 


You might be interested in
Estimate how much MORE water it would take to completely FILL the vase to the top?
MariettaO [177]

Answer:

81πinc^3

Step-by-step explanation:

Volume of glass = π(3)^2(12) = 108πin^3

Volume of water in glass = π(3)^2(3) = 27πin^3

Volume needed to fill completely = 108π - 27π = 81π^3

Topic: Mensuration

If you like to venture further, please give my Instagram page a follow (learntionary). I'll be constantly posting math tips and notes! Thanks!

6 0
3 years ago
PLS HELP ASAP I WILL GIVE BRANIEST TO WHO ANSWERS THE QUESTION!!!!
marysya [2.9K]

Answer:

10 miles is the correct answer

4 0
2 years ago
What is the solution to the inequality below?
Svetlanka [38]

Answer:

B. x < -8 or x > 8

Step-by-step explanation:

You can use process of elimination to solve this problem by going through every solution and testing them out, but let's jump right to B.

Process:

You know that since the inequality states that x^2 has to be greater than 64, x  has to be more than 8, or less than -8.

This is because 8^2 = 64, and -8^2 = 64, and the inequality requires the answer to be more than 64.

Looking at B., you can see that if x is < -8, the square of, for example, -9, would be 81. This is greater than 64, so this works!

Now, B. also has an alternative. The 'or' is a major clue to which is the correct answer, since the square root of any number can be positive or negative. (-8^2 = 8^2)

The 'or' states that x must be greater than 8. So, for example, if we take the square of 10, we get 100, and that is also greater than 64.

We've proven that this solution is accurate for both parts, so it is definitely the one we want!

Hope this helps!

4 0
3 years ago
What is bigger 5/6 or 11/12?
Maurinko [17]
First you find the common deoninator.
Step 1: Reduce (simplify) entered fractions to lowest terms, if the case:Fraction: 5 / 6 it's already reduced to lowest terms
Fraction: 11 / 12 it's already reduced to lowest terms
Step 2: Calculate LCM (lowest common multiple) of the reduced fractions' denominators, it will be the common denominator of the compared fractions:Denominator 6, factored = 2 * 3
Denominator 12, factored = 22<span> * 3</span>
LCM (6, 12) = 22<span> * 3 = 12</span>Step 3: Calculate each fraction's expanding number (LCM divided by each fraction's denominator):For fraction: 5 / 6 is 12 : 6 = (22<span> * 3) : 6 = 2</span>
For fraction: 11 / 12 is 12 : 12 = (22<span> * 3) : 12 = 1</span>
Step 4: Expand fractions to bring them to the common denominator (LCM):5 / 6 = (2 * 5) / (2 * 6) = 10 / 12
<span>11 / 12 = (1 * 11) / (1 * 12) = 11 / 12</span>
4 0
3 years ago
The speed (v) of a gear varies inversely as the number of teeth (t). If a gear that has 48 teeth makes 20 revolutions per minute
Svetradugi [14.3K]

Answer:

80

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • considering the leading term of the polynomial function. what is the end behavior of the graph? describe the end behavior and pr
    5·1 answer
  • The ratio of walnuts the milk chocolate chips in a recipe for chocolate chip brownies is 528 a particular batch of brownies has
    11·1 answer
  • You use 3 cans of soup to serve 5 people. If you want to serve 20 people, what should you do?
    6·2 answers
  • The selling price of each washing machine is $480. One is marked down by 50% the second one is marked down by 30% with an extra
    13·1 answer
  • How long would it take for a race car traveling at a speed of 150 km/hr to travel 3000m?
    9·1 answer
  • A rectangle has an area of 50X5Y5 and a length of 25X3Y which of the following represents the width of a triangle
    8·2 answers
  • 3/4 x 6/1 <br><br>A. 9/4<br>B. 2 1/4<br>C. 4 1/2<br>D. 3 3/5 ​
    7·1 answer
  • M/4=16 what does m equal?
    7·2 answers
  • Can you please help me i really need help you get 15 points if you answer all please just say a or b or c or d for answers
    9·1 answer
  • M(t)=120e−0.018t<br> How much mass remains after 50 years? Round to 2 decimal places.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!