Answer:

Step-by-step explanation:
Hello,
You can use Pythagoras in the 4 right triangles.
For one triangle it comes
.
Then for the polygon it gives
.
Hope this helps.
Do not hesitate if you need further explanation.
Thank you
the domain of the graph is where on the x axis there is a graph.
here the domain, x, is less than or equal to 6, isnce it goes down on the negative side
the arrow means the line goes on forever, so
x<=6
(x is less than or equal to 6)
Use this diagram, it might help.
From the inside, whatever that layer is, it can be any of the layers outside of it.
All whole numbers
can be a rational number, but not all rational numbers
be a whole number.
Kind of like all squares can be rectangles, but not all rectangles can be a square.
The whole number has all the attributes of a rational number, but not all rational numbers have all of the attributes of a whole number.
Answer:
c. 7.6 > 7.575
Step-by-step explanation
The ones place is the same, so you move onto the digit in the next place. 6 is more than 5 so 7.6 is greater and that's what it says.
You can apply this to the rest and see they are all untrue, remember, when it's negative the smaller digit means it's greater
Ok so we start with 80 books and remove 50% so 40
2/5 of 40 is 16
16 books