Given a triangle with perimeter 63 cm, one side of which is 21 cm, and one of the medians is perpendicular to one of its angle bisectors. Find the lengths of all sides of the triangle.

The lengths of all the sides of a triangle will be 21 cm

Explanation:

As we know the perimeter of a triangle = sum of all the sides. Let the three sides of the triangle be a, b, c . When the perpendicular bisect an angle the sides of the triangle become equal. As in the question one side is given 21 the other side also become 21. The perimeter is given 63.

According to the question,

AB=AC=21

AB+AC+BC= 63

21+21+BC=63

42+BC=63

BC=21

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: