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Knownothing
14.10.2020 •
Mathematics
Explain and Prove that the sides of the triangles below are a right triangle.
1.) 5, 10,12
2.) 6,5,3
3.) 3, 4, 5
4.) 6, 8,10
*Pls explain all ill give you brainliest or w.e its called*
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Ответ:
&
4.) 6, 8, 10
Those two are right triangles because when you add the squares of the first two it should give you the square root of the third number
a^2 + b^2 = c^2
So
3^2 + 4^2 = 5^2
9 + 16 = 25
25 = 25
6^2 + 8^2 = 10^2
36 + 64 = 100
100 = 100
Therefore they are right triangles
But 1 & 2 aren’t right triangles because when you add the squares of the first two number, it doesn’t equal to the square root of the third number.
Hope this helps!!
Ответ:
We start from the third equation:
4z = 16 divide both sides by 4
z = 4Put the value of z to the second equation:
y + 4 = 5 subtract 4 from both sides
y = 1Put the values of y and z to the first equation:
3x + 2(1) - 4 = 4
3x + 2 - 4 = 4
3x - 2 = 4 add 2 to both sides
3x = 6 divide both sides by 3
x = 2x = 2, y = 1, z = 4 → (2, 1, 4)