Answer:
Step-by-step explanation:
Since the two triangles are congruent, all their angles are as well.
So you can set 4y-10 = 3y+5 since they are the same angles.
Now solve the system by putting the y's on the left side and coefficients on the right side:
y=15.
Area of a triangle is (basexheight)/2
That's what your Formula, then you have to plug in the numbers
so the algebraric expression is (5xn)/2
For then end if you look at the patteren for the height it goes by 2. So the last height would be 10.
Plug that into the equation, which would be (5x10)/2=25
Tough one give me a couple min.
drawing isn't shown, pls take a screenshot or photograph the exercise
