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
jonny [76]
3 years ago
14

Select all of the equations that are equivalent to 3 x − 12 = 19

Mathematics
2 answers:
nydimaria [60]3 years ago
7 0

Answer:

X=2

Step-by-step explanation:

x

=

−

2

Explanation:

Collect terms in x on the left side of the equation and numeric values on the right side.

add 3x to both sides.

5

x

+

3

x

+

12

=

−

3

x

+

3

x

−

4

⇒

8

x

+

12

=

−

4

subtract 12 from both sides.

8

x

+

12

−

12

=

−

4

−

12

⇒

8

x

=

−

16

To solve for x, divide both sides by 8

8

x

8

=

−

16

8

⇒

x

=

−

2

As a check

Substitute this value into the equation and if the left side is equal to the right side for this value then it is the solution.

left side  

=

(

5

×

−

2

)

+

12

=

−

10

+

12

=

2

right side  

=

−

(

3

×

−

2

)

−

4

=

=

6

−

4

=

2

⇒

x

=

−

2

is the solution

Jobisdone [24]3 years ago
4 0

Answer:

b Beacuse you can't times 3 by twelve but you can multiple 3times7+1 to get 19

You might be interested in
The minimum mark to obtain a Grade A is 75. Cheryn managed to achieve an average of Grade A for three of her English quizzes. Wh
Masteriza [31]

9514 1404 393

Answer:

  60

Step-by-step explanation:

Let m represent the mark Cheryn scored on her first quiz. Then her average is ...

  (m +76 +89)/3 ≥ 75

  m +165 ≥ 225 . . . . . . . . multiply by 3

  m ≥ 60 . . . . . . . . . . . . subtract 165

Cheryn scored a minimum of 60 marks on her first quiz.

4 0
3 years ago
Sally is arranging her books on shelves. She has 16 adventure books, 32 mysteries, and 12 biographies. She wants each shelf to h
lara [203]

Answer:

4

Step-by-step explanation:

The number of shelves must be a factor of the number of books from each category. (Because you are using multiple shelves). You are looking for the greatest amount, so you need to greatest, common factor (GCF) from each bunch of books.

GCF of 12, 16, 32 is 4.

4 0
3 years ago
Read 2 more answers
What is the term for the price at which a car manufacturer recommends a vehicle should be sold?
Sergeu [11.5K]
MSRP is the term recomended by manufacturers.

6 0
3 years ago
Read 2 more answers
Congruence postulates
ZanzabumX [31]

Step-by-step explanation:

Ok, imagine I have a finger pointed up, and you have your's as well. They are not congruent / parallell to each other because they are not in the same plane.

Plane: A plane is kind of the space around you, so take a paper and draw a line, the space around the line is called a plane. To make two lines parallell, they have to be straight and be in the same plane

Congruence/congruent= Equal(led) to

Postulates means that you know it without proof, for example, a right angle is 90 degrees.

There are different congruence postulates. It can be used for triangles or for other shapes.

I hope this answers your question, I am not to sure on what you said !

6 0
3 years ago
Jake had 2.95 mL of a liquid. He added more liquid and now has 3.56 mL.
Deffense [45]
3.56 - 2.95 = 0.61

therefore, he added .61 mL of liquid, hope this helped!
4 0
3 years ago
Other questions:
  • Points are usually labeled as
    5·2 answers
  • One of the factors of 6x3 − 864x is<br><br> A. 4<br> B. X^2<br> C. X + 12<br> D. X - 8
    11·2 answers
  • School polo shirts come in small, medium, large and extra-large. they are available in 3 colors: red, blue, and green. what is t
    14·1 answer
  • On a number line, why is 0 important?
    9·2 answers
  • Please help me answer this.​
    13·1 answer
  • 2.) What is the volume of the shape below?​
    5·1 answer
  • What is the length of bc ? Round to the nearest tenth.
    5·2 answers
  • A car travels m miles per hour. Which variable expression represents the number of miles traveled in 8 hours?
    11·1 answer
  • Choose the data that is quantitative.
    6·2 answers
  • the atomic number and atomic weight of chlorine element is 17 and 35 respectively. Calculate the number of proton, neutron and e
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!