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Art [367]
3 years ago
10

What is 9n+1-3n+2+2n+1

Mathematics
1 answer:
Alexus [3.1K]3 years ago
6 0

Answer:

8n + 4

Step-by-step explanation:

Basically, all you need to do is combine like terms.

In other words, put the similar numbers and numbers with variables together.

9n + 1 - 3n + 2 + 2n + 1

9n + 1 - 3n + 2 + 2n + 1

9n - 3n + 2n = 8n

8n + 1 + 2 + 1

1 + 2 + 1 = 4

<u>8n</u><u> + 4</u>

Hope this helped! :)

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Compare the expression 8×3+4 and 8×(3+4)
adelina 88 [10]
This is a lesson in order of operations...

PEMDAS- parentheses, exponents, multiplication, division, addition, and subtraction... That is the order in which you have to proceed during any math problem..

Your question gives an excellent example of why.

8x3+4=
in this question, we would do multiplication then addition for the answer...

24 + 4 = 28

Now the other one

8 x (3+4)  =
in this expression, we would do what is inside the parentheses first, the addition.  Then we would multiply...

8x 7 = 56

You see we have the same numbers and we are performing the same operations, but the difference is in the order that we perform them.  As you can see it does make a difference because we get a different result.

28 vs 56
6 0
3 years ago
Three workers have to do a certain job. The first worker can finish the job in 8 hours. The second worker can finish the job in
mestny [16]

Working together three workers would take 1 hour 36 minutes to finish the job

<em><u>Solution:</u></em>

Given that first worker can finish the job in 8 hours

So in one hour, first worker can do \frac{1}{8} th of the work

The second worker can finish the job in 4 hours

So in one hour, second worker can do \frac{1}{4} th of the work

The third worker can also finish the job in 4 hours

So in one hour, third worker can do \frac{1}{4} th of the work

<em><u>The three workers working together in 1 hour can do:</u></em>

\frac{1}{8} + \frac{1}{4} + \frac{1}{4} = \frac{1 + 2 + 2}{8} = \frac{5}{8}

The three worker can thus do \frac{5}{8} th of the work in one hour

Hence the three of them together can finish the work in \frac{8}{5} hours

\frac{8}{5} = 1\frac{3}{5} hours

Thus working together three workers would take 1 hour 36 minutes to finish the job

8 0
3 years ago
Megan bought 50 beads for $9.95. She received a 10% discount, and she paid a sales tax of 6%. how much did she pay for the beads
docker41 [41]
I think the answer 10.100 i really dont know
8 0
4 years ago
The recipe for the pancake batter calls for 3/4 cup of milk.The students wants to make a batch of pancake batter that will quadr
otez555 [7]

Answer:

You would need 3 cups of milk

Step-by-step explanation:

Quadruple means to multiply by fours, therefore 3/4 times 4 is the awnser.

3/4*4/1= 12/4

Simplify that and get 3 cups!

Hope that helps <3

5 0
3 years ago
Simplify each expression using order of operations to reveal a fact about Earth Day. Earth Day is observed in this many countrie
wlad13 [49]

Answer:

YOOOOOOOOSHI :33

Step-by-step explanation:

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3 years ago
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