Answer:
See the attached picture for graph isomorphism.
Step-by-step explanation:
See my attachment and you know how to do.
72 minutes
We require their hourly rate of work
Maria cleans
the house in 1 hour
Sasha cleans
of the house in 1 hour
let x be the time it takes both to clean the house
+
= 
multiply through by 6x
3x + 2x = 6
5x = 6 ⇒ x = 
Together they can clean the house in 72 minutes
Answer:
If radius of circle = 1, the shaded sector area is calculated by:
A = pi x radius^2 x (136 x 2)/360 = 3.14 x 1^2 x 272/360 =2.37
Hope this helps!
:)
I did the work for you but the answer would be 1 second