Well since all of them are the same we have to look for one common number and given that they are all acute angles id say its about 30 or 50
The model of the bridge and the actual bridge are similar solids. The lengths of corresponding sides of similar figures are in proportion.
5/25 = 6/30 = 8/40 = 1/5
Answer: 1/5
Answer:

Step-by-step explanation:
The nth term of the sequence is

To get the first term, substitute n=1,

To get the second term, substitute n=2,

To get the third term, substitute n=3,

The sum of the first three terms is

We could also use the formula
to get the same result.