Answer: 
Step-by-step explanation:



=

=
=

=

Answer- 
Answer:
2
----------
5w^11
Step-by-step explanation:
8/20 reduces to 2/5, and (w^(-2)) / w^9 becomes 1 / w^11.
Overall, #20 reduces to:
2
----------
5w^11
Recall the rule of exponents:
w^a
----------- = w^(a-b)
w^b
and note that
w^(-2)
------------ = w^(-2-9) = w^(-11) (same as above)
w^9
So half of Nina's age is 10/2= 5. And since Greg is three years younger we subtract from 5 like so...
10/2=5
5-3
2
So Greg is 2 years old. I hope this helps love! :)
Answer:
15:21:35
Step-by-step explanation:
to find this answer you must find a ratio in which both bs are the same
so
multiple a:b by 3 and b:c by 7
15:21 21:35
then you can put the bs together
15:21:35
that is your answer
No. AB is not perpendicular to AC