Answer:
the first one
the first one Step-by-step explanation:
the first one Step-by-step explanation:from the formula Un =ar^n-1
where a is 2
where a is 2 r = 20/2=10
where a is 2 r = 20/2=10 so Un= 10×2^n-1
that's all.....have fun



As we can see in the given figure, Angles A and B are equal. therefore their opposite sides will be equal to one another, that is ~
now, let's plug the values of AB and BC in terms of x and equate them to find the value of x ~
now , let's find the measure of side AC ~
that is ~
Answer:
It was decently and increase
Step-by-step explanation:
I don't know the percent though?
All of a triangles angles added up make 180. when theres a 90, its a lot easier, all you have to do is take 180-90 which is 90 and divide 90 by 2 because there are two unknown angles which is 45 and angle A is slightly bigger than angle B (we'll say about 5 degrees bigger) so the answer would be 3) 50