Find the area of a triangle with a=20, b=30, and c=40 a.)400.5 units^2 b.)364.0 units^2 c.)290.5 units^2 d.)284.25 units^2

option C is correct.

Step-by-step explanation:

The area of triangle with sides a, b and c can be found by using formula

We are given:

a= 20

b=30

c=40

Finding s:

Putting values in the formula and solving:

Now, Finding the area:

Putting values in the formula and solving:

So, option C 290.5 units^2 is correct.

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

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: