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Rasek [7]
3 years ago
13

What is the solution of the equation:

Mathematics
1 answer:
faltersainse [42]3 years ago
5 0
7
Because 5-2 is seven so x =7
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3m+n=10<br>5m-2n=2<br>what is the answer for this one ​
svlad2 [7]

Answer:

m = 2

n = 4

Step-by-step explanation:

Ok so to solve this, you want to get it so there is only one variable and then solve that equation. To do this, you can start by doing:

3m + n = 10

multiply both sides by 2

6m + 2n = 20

now, in both of your equations you have 2n so you can add the two equations:

6m + 2n = 20

+ 5m - 2n = 2

11m = 22

divide both sides by 11

m = 2.

Now, plug this value into the original equation, 3m + n = 10:

3 * 2 + n = 10

6 + n = 10

subtract 6 from both sides

n = 4

6 0
3 years ago
Sam bought a teddy bear for $3.75 and a stuffed unicorn for $7.50. He gave the cashier $20. How much change did he receive? *
kenny6666 [7]

Answer:

3.75+7.5 = 11.25

20 dollars in total how much change.

20 - 11.25 = 8.75

$8.75 change

7 0
2 years ago
An aquarium tank that measures 2.4 m high, 6 m long, and 1.5 m wide is completely filled with water. The density of water is 1,0
notsponge [240]

Answer:

Step-by-step explanation:

4 0
3 years ago
11. For each table Ariella waits on at a restaurant, she is paid $4.00 plus 18% of the
lisabon 2012 [21]

Answer:

m=0.18b+4

She'll earn $10.30

Step-by-step explanation:

m=0.18b+4

m=0.18(35)+4

m=6.3+4

m=10.3

5 0
3 years ago
Solve for x: 3x-2&gt;5x+10
Pani-rosa [81]

Combine like terms:


3x-2>5x+10 becomes -12 > 2x


Dividing both sides by 2, we obtain x < -6

6 0
3 years ago
Read 2 more answers
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