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Ivenika [448]
3 years ago
7

Solve using elimination X- 2y = 3 3x - y = 2

Mathematics
1 answer:
FrozenT [24]3 years ago
6 0

<u>Answer:</u> x = 1/5 and y= -7/5

Step-by-step explanation: Let's solve your system by elimination.

Multiply the first equation by -3,and multiply the second equation by 1.

-3 (x - 2y = 3)

1 (3x - y = 2)

Becomes:

-3x + 6y = -9

3x -y = 2

Add these equations to eliminate x:

5y = -7

Then solve 5y = -7

5y/7 = -7/5

y = -7/5

Now that we‘ve found y, let’s plug it back in and solve for x.

Write down an original equation:

x - 2y = 3

<h3>Substitute -7/5 for y in x - 2y = 3:</h3><h3>x - 2 (-7/5) = 3</h3><h3>x + 14/5 = 3</h3><h3>x 14/5 + -14/5 = 3 + -14/5 (Add (-14)/5 to both sides)</h3><h3>x = 1/5</h3><h3><u>Answer: </u></h3><h3>x = 1/5 and y = -7/5</h3><h3 /><h3 /><h3 />

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Could anyone please help me with this question? thanks
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m∠BAD = m∠CAD, so AD is a bisector. 
In an isosceles triangle, bisector is also median and height.
So AD is perpendicular bisector.
So angle x = 90⁰. 

In triangle ABC
m∠A+m∠B+m∠C=180⁰
m∠A+66+66=180
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x=90⁰, y=24⁰
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4 years ago
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5 0
3 years ago
BRANLIEST+15Pts Need help! In each of the following graphs, the two given polygons are similar. Write precisely a single dilatio
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Answer:

With a center of (2, -2) the dilation coefficient is 3

Lt me know if I can explain any part more to help you understand.  

Step-by-step explanation:

To get the coefficient we want to see where the points start and where they end up.  it is difficult to tell the exact point of E and G and their transformations, so we will only use H and F and their transformations.  We do need 2 to get the center.

From now on I will only be oooking at y values since we know the center x value.

We know the center has to be between 0 and - 3 because it has to be inside of both shapes.

we also know that the distance from the center point to H is c - 0 and F is c - (-3).

then we also know the same number is multiplying these distances to get the new coordinates, 4 and -5 rspectively.  or more accurtely, the distance is being multiplied by the same number.

This allows us to form some proportions.  namely (c-0)/(c-4) = (c+3)/(c+5)  Solving for c, which is easier than it looks like it might be, gets us c = -2, which is the y coordiante of the center point.

So the center point is (2, -2)

Now finding the dilation coefficient is pretty simple.  How much is each original point multiplied y to get the new point.  To get this there are a few ways.  I am just going to calculate what gets us from one distance to the other.  One distance is 2 to 6 and the other is 1 to 3.  So the answer is 3.

So with a center of (2, -2) the dilation coefficient is 3

4 0
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Angela spends 120 more minutes walking her puppy over 2 days.

Given that Jarrett walks his puppy outside every day for 30 minutes, while Angela walked her puppy every day for 90 minutes, to determine how many more minutes does Angela spend walking her puppy over 2 days compared to Jarrett walking his puppy over 2 days the following calculation must be performed:

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Therefore, Angela spends 120 more minutes walking her puppy over 2 days.

Learn more about maths in brainly.com/question/18500585

4 0
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