Subtracting Integers
Subtract +9 - +4 =
Add The Opposite +9 + -4 =
Result +5
Answer: Yes, the set of real numbers is closed under addition.
Explanation:
Let x and y be two real numbers. Their sum x+y is some other real number. This is what it means when we say the set of real numbers is closed under addition. Taking any two numbers and adding them will get us some other real number.
There is no way to have x+y be nonreal while x,y are both real.
The question reminds you of all the tools you need:
It says ...
"Opposite angles are equal."
So the upper right angle is x+40 just like the bottom left,
and the bottom right angle is 3x+20 just like the upper left.
And it says ...
"The sum of all angles is 360°."
You know what each of the four angles is, so you can addum all up,
set the sum equal to 360, find out what number ' x ' is, and then
use that to find the size of every angle.
Answer:
I will explain in step by step.
Step-by-step explanation:
Top ones 40.
-7
285
5
0
Answer:
Convert to a decimal by dividing the numerator by the denominator.
1.84
invitations
Step-by-step explanation:
