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sp2606 [1]
2 years ago
5

Х+2у=5

Mathematics
1 answer:
Igoryamba2 years ago
8 0

Answer:

x=5 y=0

Step-by-step explanation:

x =  - 2y + 5 .......(3)\\ putt \: value \: in \: eq \: 2 \\ 3( - 2y + 5) + 6y =  - 10   \\  - 6y + 15 + 6y =  - 10 as \: te \: value \: after \\subtraction \:is \: 0 \\ y = 0 \\ put \: the \: value \: of \: y \:in  \: eq3 \\ x =  - 2(0) + 5 \\ x = 5

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anastassius [24]

Option D:

Right triangle

Solution:

Let us first define obtuse, acute right triangle and supplementary.

<u>Obtuse angled triangle:</u>

If any one of the angle in the triangle is more than 90°, then the triangle is an obtuse angled triangle.

<u>Acute angled triangle:</u>

If all the angles of the triangle are less than 90°, then the triangle is an acute angled triangle.

<u>Right angled triangle:</u>

If any one of the angle in the triangle is exactly 90°, then the triangle is a right angled triangle.

<u>Supplementary:</u>

If sum of the angles is 180°, then the angles are supplementary angles.

But this is not a kind of triangle.

In given triangle one of the angle is 90°.

Therefore, this is a kind of right triangle.

Option D is the correct answer.

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3 0
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slega [8]

Answer:

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Step-by-step explanation:

4 0
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Step-by-step explanation:

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