In the accompanying figure, triangle abc has coordinates a(0,3), b(7,3), c(7,7). what is the area of triangle abc in square units?

We know area of triangle =

In triangle ABC , AB is the base and BC is the height

Now we find the distance between A and B

Distance formula is

A(0,3), B(7,3)

Distance AB =

= = 7

B(7,3), C(7,7)

Distance BC =

= = 4

area of triangle =

area of triangle =

= = 14

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12