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
Sav [38]
3 years ago
12

Show me how to do this​

Mathematics
1 answer:
romanna [79]3 years ago
4 0

Answer:

<h2>x = 7 cm</h2>

Step-by-step explanation:

The perimeter of the given triangle:

P = (2x + 1) + (x + 2) + (3x - 9) and P = 36 cm.

Therefore we have the equation:

2x + 1 + x + 2 + 3x - 9 = 36          <em>combine like terms</em>

(2x + x + 3x) + (1 + 2 - 9) = 36

6x - 6 = 36      <em>add 6 to both sides</em>

6x = 42          <em>divide both sides by 6</em>

x = 7

You might be interested in
1/2(6y-8)-(12y-16)+7
LiRa [457]

Answer:

-9y + 19

Hope that helps.

8 0
3 years ago
Which symbol creates a true sentence when x equals 6?
BigorU [14]
The answer would be the greater than sign such as >... the whole equation would be 9*4-2x>2(9-x)

4 0
3 years ago
Read 2 more answers
Eight more than the product of two and a number x
-BARSIC- [3]

8+2x

That will be the answer.

3 0
4 years ago
Read 2 more answers
I need help On these 8 questions that are blank
Ostrovityanka [42]

Answer:

X = 5

Step-by-step explanation:

3x + 12 + 9x = 72

okay hopefully i can explain so when your doing this combine like terms so

3x + 9x = 12x

12x + 12 = 72

then you would subtract both sides by 12

+12 = subtract x+12=2

- 12 = add x-12=2

there just flipped so in this case i would subtract 12

12x + ( 12-12) = ( 72-12 )

so 12-12 = 0 and 72-12 is equal to 60

12x = 60

the divide on both sides l but leave the x alone so its just 60 divided by 12 wich is 5

so X = 5

hope this helps with ur homework a little btw go back and redo ur other awnsers with this new concept hope it helps

7 0
4 years ago
The faces of a tetrahedron die are numbered 1 to 4. If each of the 4 sides is equally likely to land down, what is the probabili
Marat540 [252]
Hello!

If there is 4 faces and 1/4 chance of any side end up face down, we just have to decrease one chance, so, the chance of  the face "2" does not end up face down is equal the sum of the chances of the others faces end up face down, so, we have: 3/4.

Hugs!
8 0
4 years ago
Read 2 more answers
Other questions:
  • Question 1 (1 point)
    10·1 answer
  • The line A bus arrives at the stop every 25 min. and the line B bus arrives every 15 min. Both arrive at the bus stop at 1 pm. A
    10·1 answer
  • Find the interval of converge to this series? Sum when n=1 and goes to infinity (x-2) ^n/ (n! .2^)
    5·1 answer
  • Find me the answer please ​
    7·2 answers
  • I need help plzzzzzzzzzzzzzz
    6·2 answers
  • . Which expression is a factor of 9 r 2 − 4 r + 1?
    13·1 answer
  • For 25 points:<br> x + 5 = 10<br> 2x + ? = 20<br> Answer for "?"
    10·1 answer
  • What is 3/4 divided by 1/8 (i know i already asked this but, please a picture of how you did it!)
    11·2 answers
  • 2 dozen oranges cost $14400.what is the cost per orange?​
    8·2 answers
  • 2.5.2 project performance task:trade show booth
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!