Answer:
A)2
Step-by-step explanation:
we would like to integrate the following definite Integral:

use constant integration rule which yields:

notice that we can rewrite √x using Law of exponent therefore we obtain:

once again use law of exponent which yields:

use exponent integration rule which yields;

simplify which yields:

recall fundamental theorem:

simplify:

hence
our answer is A
Answer:
<em>Length of BO is </em><em>three times the length of DO.</em>
Step-by-step explanation:
In trapezoid ABCD, 
In ΔCDO and ΔABO,
(Alternate interior angles)
(Alternate interior angles)
So,
according to Angle-Angle similarity.
Therefore, the ratio of corresponding sides will be same.



