Answer:
The triangles are indeed congruent I know this because if you look at the lines on each side of the triangle they're the same. Another way I know it because They're both right angles. So, if you put them side by side they would be identical.
The width is 5 and the length is 10
Step-by-step explanation:
5m
_____
l l
l l 10m
l_____l
Cant see the picture sorry
x2^+8x=-20
9x^2=20
x^2=20-9
x^2=11
√x^2=√11
x=√11
