Step-by-step explanation:
can't really use the Pythagorean because you don't know this is a right triangle.
use the fact that they are similar
so
3/6 = x/12 where x is FE
cross multiply
6x = 36 therefore FE = 6
then 6/12 = y/9 where y is FD
cross multiply
12y = 54 = 54/12 therefore FD = 4.5
Since percents are out of 100 (69/100), you can change them to a ratio which in this case would be 69:100 because it can't be simplified.
Answer: 22% of the pages are filled up
Step-by-step explanation: 900/9= 100 78% of 100 is 78
22+78=100 therefore reaching 100 percent. since 78% is empty that means 22% is being used.
Answer:
339.29km²
Step-by-step explanation:
hope that helped if not let me know, please dont report me :)
I’m not sure if I’m correct but I think it is 2^21
