The given equation which is in two variable is
⇒2 x + y =9
As we know that to get a unique solution you need two intersecting lines.
But here only one line is given.
On a single line there lie infinite number of points.
So, for different values of x we get different values of y or different values of y we get different values of x.
So , we can write the above equation as
either ⇒y=9-2 x Or x=9-2 y
I have drawn graph for you.
Thus , there are infinite number of solution of this equation. Like (0,9),(1,7),(2,5),(-2,13),(-1,11),(-3,15)......
x= 7.83 x 10^-7
⅓ - (-⅔)
= 1/3 + 2/3
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will be the answer.
If the altitude to the hypotenuse of a right-angled triangle bisects the hypotenuse, then we can know that the triangle is <u>Isosceles </u><u>right </u><u>t</u><u>r</u><u>iangle.</u> (AB=AC)
Make AB=AC=2, so,
Prime factorizing, we get,
Take two 2's outside by taking common because of "square" root,
BD = DC = ,
AD = = =
So, AD=BD=CD= BC
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