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
julia-pushkina [17]
2 years ago
11

9. Simplify the expression: 4a + 8 - 2a – 4 + 7b.

Mathematics
1 answer:
nikdorinn [45]2 years ago
8 0

Answer:

2a + 7b + 4

Step-by-step explanation:

4a + 8 - 2a - 4 + 7b

<u><em>Group like terms</em></u>

4a - 2a + 7b + 8 - 4

<u><em>Add similar elements (4a - 2a)</em></u>

2a + 7b + 8 - 4

<u><em>Add/Subtract (8 - 4)</em></u>

2a + 7b + 4

You might be interested in
Solve for W <br><br> T= sqrt(5/(wc)
Gnoma [55]
T= sqrt(5/wc) remove ( ) T= 5sqrt/wc multiply by wc Twc=5sqrt divide by Tc W= 5sqrt/cT hope this helps
5 0
3 years ago
Read 2 more answers
There are 9 performers who are to present their acts at a variety show. How many different ways are there to schedule their appe
nika2105 [10]
For this type of question it is easiest to think about it in terms of a simple multiplication. The way we can do this is by working out how many possibilities there are for each position on the program. This is as follows:
For the first act, there are 9 possible performers we can pick
For the second act, because we have already assigned a performer to the first act, there are only 8 possible performers
For the third act, because we have already assigned a performer to the first two acts, there are only 7 possible performers
This goes on and on until we reach the final act, where we have used all the performers except one.
Therefore we can say:
For the first act there are 9 possibilities
For the second act there are 8 possibilities
For the third act there are 7 possibilities
For the fourth act there are 6 possibilities and so on
If we want to write this mathematically we can just say that there are:
9 possibilities x 8 possibilites x 7 possibilities etc right down until we are at the final act where there is 1 possibility.
To write this out as an equation we just say:
9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = the number of different ways
In maths however, we have a much simpler way of saying this, which we call "factorial".
That whole stream of numbers up there can just be said to be "9 factorial", or if we are writing it in an equation "9!". You may find that your calculator has a button which has an "!" on it. If you put in the number of performers and then press the "!" button, it will give you the answer to your question.
Hope this helped you :)
3 0
3 years ago
A satellite flies 28912 miles in 5.56 hours. How many miles has it flown in 12.93<br> hours?
UNO [17]
67,239; 28912/5.56= 5,200 miles per hour and then multiply that by 12.93
7 0
2 years ago
Help please. :) we support juneteenth lol
Delvig [45]

Answer:

it is a Equilateral triangle

4 0
3 years ago
72-2x=86-3x solve for x
SpyIntel [72]

Answer:

x=14

Step-by-step explanation:

1.subtract 72 from 86

2. add 3 to -2

3. get the X on one side

6 0
3 years ago
Other questions:
  • A second hand car was sold for $190000,at a loss of $85.find the CP of the car
    7·1 answer
  • If the total bill at a restaurant was $43.58, how much tip would you leave if you left a 15% tip?
    15·2 answers
  • Which is the conclusion of this statement?
    8·2 answers
  • Are the following geomatric sequence if so fin the common ratio 3-12,48-192
    8·2 answers
  • Will it be acceptable to write R285 456 in south afrika EXPLAIN​
    12·1 answer
  • Solve by the matrix method , x+y/5 -1=y-x​
    12·1 answer
  • Clare is painting some doors that are all the same size. She used 4 liters of paint to cover 50 doors. How many liters of paint
    7·2 answers
  • A<br> 1200<br> b<br> 3200<br> c<br> 3680<br> d<br> 5520
    12·1 answer
  • Find the equation of direct variation,
    12·1 answer
  • 87789-8977609-78860=
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!