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
Simora [160]
4 years ago
15

Describe how to combine like terms in the expression 3n + 4n -2

Mathematics
2 answers:
storchak [24]4 years ago
5 0
You can combine the same numbers with the same variables using the operation sign for each. For example, using your equation, you would combine the 3n and 4n which is 7n. So your equation would be
7n - 2
LiRa [457]4 years ago
5 0
Combining like terms means that if u have two terms that are the same coefficient like 3n and 4n you have to either add or subtract because You have to have only one n in one side so u add 3 to 4 and u get 7n. Another example: 3n-2= 4n you would have to the same thing which is to add both. I'm sorry I'm not the best at explaining 
You might be interested in
PLEASE HELP ; I need help on this ? I am confused .
zubka84 [21]
256,000-2.56*100,000
Since there are 6 digits in 256,000, it is 2.56*100,000 becuase 100,000 also has 6 digits.
2.56*100,000=2.56*10^5
Since there are 5 zeroes in 100,000, it is 10^5.
256,000=2.56*100,000=2.56*10^5
First box: 100,000
Second box: 5
6 0
3 years ago
Read 2 more answers
What number is 76.8% of 42.5
Law Incorporation [45]
To get the solution, we are looking for, we need to point out what we know. 

<span>1. We assume, that the number 42.5 is 100% - because it's the output value of the task. </span>
<span>2. We assume, that x is the value we are looking for. </span>
<span>3. If 42.5 is 100%, so we can write it down as 42.5=100%. </span>
<span>4. We know, that x is 76.8% of the output value, so we can write it down as x=76.8%. </span>
5. Now we have two simple equations:
1) 42.5=100%
2) x=76.8%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
42.5/x=100%/76.8%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 76.8% of 42.5

42.5/x=100/76.8
<span>(42.5/x)*x=(100/76.8)*x       - </span>we multiply both sides of the equation by x
<span>42.5=1.30208333333*x       - </span>we divide both sides of the equation by (1.30208333333) to get x
<span>42.5/1.30208333333=x </span>
<span>32.64=x </span>
x=32.64

<span>now we have: </span>
<span>76.8% of 42.5=32.64</span>
6 0
4 years ago
Camden is taking a multiple choice test with a total of 50 points available. Each question is worth exactly 5 points. What would
alina1380 [7]

Answer:

<h2>1. 40 points</h2><h2>2. 50-x points </h2>

Step-by-step explanation:

1. Given that the total number of points is  50

2. Each question is worth 5 points

We can now calculate the number of questions by dividing the total points by the worth of each question

the number of question is  = 50/5= 10

hence there are 10 questions available

if he misses 2  questions, which will amount to 10 points his score will be

50-10 = 40 points

Hence if he got x questions wrong his score will be

50-x points

8 0
3 years ago
Please help ..........
Bess [88]
Try multiplying all the sides. 
4 0
4 years ago
Read 2 more answers
A figure with vertical line symmetry is placed on the coordinate plane. Given that the points (–8, –4) and (–3, –4) are on the e
nevsk [136]
Based on the description, the edges lying on those coordinates can be considered end points to a line. In this scenario, we can apply the midpoint formula to find the coordinates that lies on the vertical symmetry. 

Midpoint formula: (x1+x2) / 2 for the x coordinate
                             (y1+y2) / 2 for the y coordinate

After calculating this, we obtain (-5.5, -4) as our midpoint. Hence the answer is letter A. 
3 0
4 years ago
Read 2 more answers
Other questions:
  • The family size bottle of sunscreen holds 12 fluid ounces (fl oz) of sunscreen. The regular bottle holds 75% less. How many fewe
    15·1 answer
  • Are all parallelograms rhombi
    8·1 answer
  • The population of a city in the Dallas area went from 35,000 to 87,500 in 12 years.what is the percent of increase?
    10·2 answers
  • Rewrite each expression using exponents (-19)(-19)(-19)(-19)(-19)
    13·1 answer
  • At 7 p.m,the temperature was 10 °
    10·1 answer
  • Can someone please help me???
    14·1 answer
  • Why is it a good idea to check to see if your answer is reasonable?
    9·2 answers
  • What is the distance in units between the points (-1, 5) and (-1, -3)?
    5·1 answer
  • Can you help me for this question?? index laws multiplying p power 8 × p power-5.​
    8·1 answer
  • Write an equation in slope intercept form of a line with a slope of -3 that passes through the point (-5,4)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!