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
frozen [14]
4 years ago
11

The sum of twice a number and seven is 13. Find the number.

Mathematics
1 answer:
Furkat [3]4 years ago
3 0

Answer:

<h2>The answer is 3</h2>

Step-by-step explanation:

Let the number be x

The statement

twice a number is written as

2x

The sum of twice a number and seven is written as

2x + 7

The result is 13

So we have

2x + 7 = 13

Subtract 7 from both sides

That's

2x + 7 - 7 = 13 - 7

2x = 6

Divide both sides by 2

That's

\frac{2x}{2}  =  \frac{6}{2}

We have the final answer as

<h2>x = 3</h2>

Hope this helps you

You might be interested in
Solve using the elimination method. <br> show your work <br> 2x - y = 6 <br> x + y = 6
bekas [8.4K]

Answer:

x=4, y=2

Step-by-step explanation:

2x - y = 6  

x + y = 6

Add these together to eliminate y

2x - y = 6  

x + y = 6

-----------------

3x = 12

Divide by 3

3x/3 = 12/3

x=4

But we still need y

x+y =6

4+y =6

Subtract 4 from each side

4+y-4 = 6-4

y=2

7 0
3 years ago
Which graph models the function f(x) = −2(3)x?
swat32

Answer:

exponential function going through point 0, negative 2 and ending down on the right

Step-by-step explanation:

(Took the test, also seen as "Option A", this graph goes down and hits the y line at 0,-2.)

6 0
3 years ago
The following system has a solution of x=-5, y=9, z=11.
Bess [88]
False - plug in the bramble for the first equation and you get 40 = 12 which is not true
7 0
3 years ago
What is 30/40 converted into a percent
juin [17]

75%

30/40 means its 75% out of 100%

75$ representing the 30 and the 100$ representing the 40

7 0
3 years ago
Read 2 more answers
Please help me I’m confused
Vesnalui [34]
I think it’s b I hope I’m sosososososos sorry if it ain’t
8 0
3 years ago
Other questions:
  • Plz help in math and plz explain thank you
    9·1 answer
  • Question 6 options: What is the approximate area of a circle with a diameter of 56 cm? Use your calculator button for π. Round y
    13·1 answer
  • A fast-food franchise is considering building a restaurant at a certain location. Based on financial analyses, a site is accepta
    14·1 answer
  • A doctor released the results of clinical trials for a vaccine to prevent a particular disease. In these clinical​ trials, 400 c
    7·1 answer
  • Help me please please
    15·1 answer
  • What is the weight of a rock that has a mass of 5 kilograms​
    10·1 answer
  • What’s the correct answer to this problem ?
    11·1 answer
  • If a cone has a radius of 6 cm and the height of 18 cm what is it's volume ?
    13·1 answer
  • What is the difference between slope intercept and point slope form?
    14·1 answer
  • Find the LCM of each set of numbers<br> 15,25,75
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!