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
enot [183]
3 years ago
11

I need some help please

Mathematics
2 answers:
AleksandrR [38]3 years ago
7 0

Answer:

a)-10 b)7

Step-by-step explanation:

a)2 ( x + 3 ) = x - 4

2x+6=x-4

2x+6-x=-4

x+6=-4

x=-4-6

x=-10

b)4 ( 5 x - 2 ) = 2 ( 9 x + 3 )

20x-8=2(9x+3)

20x-8=18x+6

20x-8-18x=6

2x-8=6

2x=6+8

2x=14

x=14/2

x=7

gizmo_the_mogwai [7]3 years ago
3 0

Answer:

a) -10

b) 7

Step-by-step explanation:

a) 2(x + 3) = x - 4

=  > 2x + 6 = x - 4

=  > 2x - x =  - 4 - 6

=  > x =  - 10

b) 4(5x - 2) = 2(9x + 3)

=  > 20x -8 = 18x + 6

=  > 20x - 18x = 8 + 6

=  > 2x = 14

=  > x =  \frac{14}{2}  = 7

You might be interested in
Evaluate the expression 5k2 - 7k when k = 3
VikaD [51]

Answer:

24

Step-by-step explanation:

In this question, you have to solve by plugging in the value to the "k" variable and solve.

Solve:

5(3)^2 - 7(3)

3^2 = 9

5(9) - 7(3)

45 - 7(3)

45 - 21 = 24

Your final answer would be 24.

4 0
3 years ago
Read 2 more answers
How do I solve this problem
erma4kov [3.2K]
10√3 (-7 - √5)

10√3 × -7 + 10√3 × -√5

-70√3 + 10√3 × -√5

-70√3 - 10√3√5

-70√3 -10√3 × 5

-70√3 - 10√15

hope that helps, God bless!
6 0
4 years ago
A salesman has a car for sale for $5000. He decides to increase the price by 40%. When no one buys the car, he decreases the new
Amiraneli [1.4K]

Answer:

0 because it fell apart after he glued it togheter

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Use the modle to find 2x137
Lena [83]
the answer is 2• 137= 274
3 0
3 years ago
Read 2 more answers
I need some help on these questions thanks
GuDViN [60]

Answer:

theres no questions

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP!!!!!!!!!!!!!!!
    5·1 answer
  • Is the relationship between the variables in this table a direct variation, an inverse variation, or neither. If it is a direct
    15·1 answer
  • Factor the question completely
    14·1 answer
  • Morgan is walking her dog on an 8-meter-long leash. She is currently 500 meters from her house, so the maximum and minimum dista
    12·2 answers
  • Quantity of bricks is 350 and it cost 45p per brick what is the answer?
    8·1 answer
  • Graph each integer on the # line above
    10·1 answer
  • Which statement describes the situation shown in the graph
    13·2 answers
  • Need help on this question
    8·1 answer
  • What are the solutions of 3 x^2-x+4=0
    10·1 answer
  • In the late 2000's sales of SUVs decreased due to higher gas prices and improved alternative vehicles. A car dealer is intereste
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!