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
Sophie [7]
3 years ago
13

Solve this please, and quick

Mathematics
2 answers:
rosijanka [135]3 years ago
8 0
Error: They subtracted 9x from both sides when they should have subtracted 12. You can’t subtract unlike terms
Correct: x=-5/16
Subtract 12 from both sides to get -5 on the left and add 7x and 9x to get 16x. Divide both sides by 16 to isolate x.
Viefleur [7K]3 years ago
3 0

Answer:

3.2

Step-by-step explanation:

7x + 12 + 9x = 7

16x + 12 = 7

       - 12    -12

16x = -5

16 divided by -5 is 3.2

x = 3.2

You might be interested in
Please help!!!!!!! Will mark brainliest
netineya [11]

Answer:

\displaystyle 5

Step-by-step explanation:

\displaystyle ±7 = \sqrt{49} \\ \\ -7 = x + 2\:\:AND\:\:7 = x + 2 \\ \\ -9, 5 = x

Sinse you want the POSITIVE solution, your answer is 5.

I am joyous to assist you at any time.

7 0
2 years ago
I'll give 30 points and brianlist
Sedaia [141]

Answer:

80,10,66

Step-by-step explanation:

Hope this helps :)

6 0
3 years ago
1.81 repeating as a fraction
OlgaM077 [116]

Answer: 1 73/90 if the decimal is 1.81 and the one is repeating

If the .81 is repeating then 1 9/11

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please help me with question 4!
Minchanka [31]

Answer:

I think that there might be some complex differential equation

stuff going on here if this were in the real world, but for the sake of this problem... may I suggest that the tank is filling up  at a rate of

1/8 of a tank per hour...

it is evaporating at a rate of 1/12 tank per hour

you can subtract the rates

1/8 - 1/12 = 12/96- 8/96 = 3/96 = 1/32 tank/hr

so to fill the tank it should take 32 hours...

I think the logic and math work... lets see if someone else will verify this analysis?

Step-by-step explanation:

6 0
2 years ago
Un motor de 90 kW se utiliza para elevar una carga de 1 200 kg. ¿Cuál es la velocidad media durante el ascenso?
Llana [10]
Sheesh this lookin hard

8 0
2 years ago
Other questions:
  • Find the three arithmetic means in this sequence. 14, __, __, __, 26
    11·2 answers
  • Simplify: √ (50x^7y^6)
    14·1 answer
  • Miguel ordered lunchmeat at the
    9·1 answer
  • Please help. I’ll mark you as brainliest if correct!!!
    11·1 answer
  • What two integers does 226 lie between?
    9·1 answer
  • Distance between (-12, 2) (-9, 6)<br><br> please helpppp
    5·2 answers
  • Help please im failing‍♀️
    14·1 answer
  • Suppose a 50-foot ladder is leaning against a wall. Which statements about the base of the ladder are true?
    12·1 answer
  • Match each algebraic expression to the correct verbal expression.
    8·1 answer
  • Please need help please please
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!