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Tju [1.3M]
4 years ago
9

What's the solution of -x+y=1 x+y =11 using elimination of addition and subtraction

Mathematics
1 answer:
mafiozo [28]4 years ago
4 0

Answer:

x=5

y=6

Step-by-step explanation:

If you add the two, it turns into 2y=12. That means y=6. So then x would equal 5 if you bring y into one of them.

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A rectangular swimming pool that is 10 ft wide by 16 ft long is surrounded by a cement sidewalk of uniform width. If the area of
mars1129 [50]

The pool has area 160\,\mathrm{ft}^2.

Let x be the width of the sidewalk. Then the combined area of the pool and sidewalk is (10+x)(16+x)=160+26x+x^2, so that the area of the sidewalk alone is 26x+x^2.

We're told this area is 155\,\mathrm{ft}^2, so

26x+x^2=155\implies x^2+26x-155=(x-5)(x+31)=0\implies x=5

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3 years ago
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What’s MA I need a answer asap if possible
choli [55]

Answer:

Step-by-step explanation:

MA²=MX²+AX²

=20²+21²

=400+441

=841

MA=√841=29

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2 years ago
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What ordered pair describes the location of p
Hitman42 [59]

We conclude that the coordinates that describe the location of point P' are (4, -2).

<h3>What ordered pair describes the location of P'?</h3>

For a random point with coordinates (x, y), a reflection over the x-axis only changes the sign of the y-component. So the coordinates after the reflection are (x, -y).

In this case, the coordinates of point P are (4, 2), so if we apply a reflection over the x-axis to get the point P', the coordinates are:

(4, -2)

Where we just changed the sign of the y-component.

We conclude that the coordinates that describe the location of point P' are (4, -2).

If you want to learn more about rotations.

brainly.com/question/4289712

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4 0
2 years ago
In a football tournament, each team played exactly 19 games. Teams get three points for everyone and one point for every time. A
irinina [24]

We can actually deduce here that when the tournament ended, team Olympus have tied for 13, 10, 7, 4, 1 times.

<h3>What is inequality?</h3>

In Mathematics, inequality is used to express or show quantities that are less than, greater than, greater than or equal to,  less than or equal to.

The following can be seen in inequality expressions:

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Looking at the question, we can see that each team plays exactly 19 games.

Every win (w) = 3

Every tie (t)= 1

Every loose = 0

But Olympus got a total of 28 points

Thus: 3w + t = 28 ---------(1)

Note that each team plays  19 games

Thus, T + W  ≤  19 --------------(2)

and T , W ≥ 0

Looking at equation (1) and (2)

=> 2W  ≥  9

=> W ≥ 4.5  

( match can be won in integers only )

=> W  ≥  5  

W - 5, 6, 7, 8, 9    

T - 13, 10, 7, 4, 1  

Loose - 1, 3, 5, 7, 9

Thus, team Olympus have tied for 13, 10, 7, 4, 1 times.

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7 0
2 years ago
Jacques is standing 1200 meters from a
Finger [1]

Answer:568.58

Step-by-step explanation:

Tan(35)=h/1200

1200tan(35)=h

568.57766=h

568.58

4 0
3 years ago
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