Answer:
In mathematics, a set is closed under an operation if performing that operation on members of the set always produces a member of that set. For example, the positive integers are closed under addition, but not under subtraction: 1 − 2 is not a positive integer even though both 1 and 2 are positive integers.
Step-by-step explanation:
I hope this helps you out.
Answer:
I believe the answer is 18/1
Display board measurements = 10ft by 6ft
So all the sides would be 10ft, 10ft, 6ft, 6ft
Add them all together= 32ft
Ribbon length would need to be 32ft long
Answer:
2
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
7x−3(2x+1)=5−3x
7x+(−3)(2x)+(−3)(1)=5+−3x(Distribute)
7x+−6x+−3=5+−3x
(7x+−6x)+(−3)=−3x+5(Combine Like Terms)
x+−3=−3x+5
x−3=−3x+5
Step 2: Add 3x to both sides.
x−3+3x=−3x+5+3x
4x−3=5
Step 3: Add 3 to both sides.
4x−3+3=5+3
4x=8
Step 4: Divide both sides by 4.
4x
4
=
8
4
x=2
Hoped I helped -
Sleepy~