Answer:
the exponent is 6............
If the ratio is 90:3 and there are 4 groups of 3 in 12, then the ratio would then be 450:12, leaving you with 450 as the answer. Hope I helped
In this case you would set it up as

(180 represents the degree of the triangle)
Add up like terms

Subtract 130 to the other side (180-130)

Divide 10 to the other side ( 50/10)
.

Hope this was clear :)
Answer:
They are not congruent
Step-by-step explanation:
In order to be congruent their angles have to be the same and angle A (60º) and D (40º) are different