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
weeeeeb [17]
3 years ago
9

Please help, I’ll give brainly!!!

Mathematics
1 answer:
Sever21 [200]3 years ago
8 0

Answer:

9.

3 ( 1 - 3x ) = 2 (-4x + 7)

3 - 9x = -8x +14

-9x +8x  = 14 - 3

-x = 11

x = -11

10.

-10 + x + 4 - 5 = 7x - 5

-10 +x -1 = 7x - 5

-11 + x = 7x - 5

-11 + 5 = 7x -x

-6 = 6x

x = -6/6

x = -1

11.

-8n + 4 ( 1 + 5n ) = -6n -14

-8n + 4 + 20n = -6n -14

12n +4 = -6n -14

12n  + 6n = -14 -4

18n = -18

n = -18/18

n = -1

12.

-6n - 20 = -2n + 4 ( 1 - 3n)

-6n - 20 = -2n + 4 - 12n

-6n - 20 = -14n +4

-20 -4 = -14n +6n

-24 = 8n

n = -24/8

n = -3

13.

4n - 40 = 7 (-2n +2)

4n - 40 =  -14n + 14

4n +14n = 14 +40

18n = 54

n = 54 / 18

n = 3

14.

7(5a - 4) -1 = 14 - 8a

35a -28 -1 =  14 - 8a

35a -29 = 14 - 8a

35a +8a = 14 +29

43a = 43

a = 43/43

a = 1

15.

-31 - 4x = -5 - 5 ( 1 + 5x)

-31 - 4x = -5  -5 - 25x

-31 - 4x = -10 -25x

-4x +25x = -10 +31

21x = 21

x = 21/21

x = 1

16.

38 +7k = 8 (k +4)

38 +7k = 8k + 32

38 - 32 = 8k -7k

k = 6

You might be interested in
In 1 hr, a plane can travel 440 mi into the wind and 480 mi with the wind. Find the wind speed and the rate of the plane in stil
nexus9112 [7]

Answer:

the plane would fall and crash at 150mph

Step-by-step explanation:

8 0
3 years ago
Sue bought two shirts on sale. She would have to pay $20.00 for each shirt, but she got them for 25% off. The two shirts also ha
andrezito [222]
$20×.25=$5
$20-$5=$15
$15×.15=$2.25
$15+$2.25=$17.25
$17.25 is your answer
4 0
3 years ago
Can someone help me?
tatyana61 [14]

Answer:

21

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Identify the function that best models the data.
In-s [12.5K]
The answer you are  looking for is A, I'm a little rusts at these but that should your answer have a good day!
7 0
3 years ago
Read 2 more answers
Solve the system by adding or subtracting x - 2y = - 13 5 x + 2y = -17
Delvig [45]
You subtract and find x=10
5 0
3 years ago
Read 2 more answers
Other questions:
  • How many ninths are in 5.75
    9·1 answer
  • Judite paga R$ 180,00 por mês em um plano de saúde.Se ela efetuar o pagamento entre os dias 1 e 10 de cada mês, ela tera um desc
    10·2 answers
  • Please help me. I will give Brainliest!
    8·1 answer
  • NEED HELP FAST WILL GIVE BRAINIEST
    7·2 answers
  • A soccer team has won 1/2 of the games they played. they won 12 games. how many games did they play? Show your working/calculati
    13·1 answer
  • Consider the following sets
    5·2 answers
  • Help me please !! i need the answer
    15·1 answer
  • State the property that is demonstrated: (3)(8) = (8)(3).
    13·1 answer
  • Help please it’s for a mastery test
    7·2 answers
  • What does 4! Equal?show the equation and what it equals
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!