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notka56 [123]
3 years ago
12

Solve the system using substitution. Write the solution as an ordered pair. (1 point) SHOW YOUR WORK FOR FULL CREDIT! (2 points)

Mathematics
2 answers:
Darya [45]3 years ago
7 0

Answer:y = -7, x = 12

Step-by-step explanation:

y + x = 5

x = 5 - y

y = 2(5 - y) + 11

y = 10 - 2y +11

-y -y

0 = 10 - 3y + 11

21 = -3y

y = -7

-7 + x = 5

x = 12

beks73 [17]3 years ago
3 0

x = -2

y = 7

Solution: (-2,7)

//Hope this helps.

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Find the solution of the system of linear equations below<br>y = 5x +1 <br>–5x + y = 1​
jeka57 [31]

Answer:

Infinite number of solutions.

Step-by-step explanation:

Y=5x+1

-5x+Y=1

substitute value of y in first equation (5x+1) into 2nd equation

-5x+5x+1=1

0+1=1

1=1

since answer equals on both sides of the equatio, the answer is determined to be infinite.

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A bicycle store costs ​$4000 per month to operate. The store pays an average of ​$80 per bike. The average selling price of each
Andrews [41]
B=45.............................
3 0
2 years ago
Solve pls thank you​
Dominik [7]

Answer:

B.

Step-by-step explanation:

So there are 16 grams initally. Then, the amount of water decreases by 3.5%.

So first we must find 3.5% of 16. 3.5% in decimal form is 0.035, since you divide 3.5 by 100. Then, when you multiply 0.035 by 16, you get 0.56. Since the solution decreased by that percentage, you must subtract 0.56 from 16, which is 15.44.

Then the amount of water decreases by 4.25%. That in decimal form is 0.0425. You multiply it by 15.44, and it comes out to 0.6562. You subtract that from 15.44, not 16, since some of the water has evaporated. So you get 14.7838.

5 0
2 years ago
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For A Free 50 Points... Tell me how to give an answer the "Brainliest Answer" Thingy... Also the person who answers with how to
KatRina [158]

Answer:

ok so when a person answers a question and then theres two people who answered it a little crown will appear at the top and you can decide if you want to mark them brainliest for the answer, Brainliest means when you think or decide that it is the best answer theoretically.

Step-by-step explanation:

               

                                :c

3 0
2 years ago
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Solve for w.<br><br> 5w + 9z = 2z + 3w
DIA [1.3K]
When solving for a variable, you get the variable you're trying to solve for on one side and everything to the opposite of that variable.

We have the equation <span>5w + 9z = 2z + 3w.

Usually the variable we're solving for we want on the left. But it's fine to have it on the right side, too.

Let's subtract 9z from the left-hand side. That way, the 5w will be alone on the left-hand side.

And remember, anything we do on one side we do to the other side.

</span><span>5w + 9z - 9z = 2z + 3w - 9z
</span><span>5w = -7z + 3w

The 3w term on the right-hand side needs to be removed. So, subtract each side by 3w.

5w - 3w = -7z + 3w - 3w
2w = -7z

Now, we need to divide each side by 2 to see what the w variable is equal to.

2w / 2 = -7z / 2
w = -7z / 2 or w = -3.5z

So, w is equal to -3.5z.

</span>
7 0
2 years ago
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