Answer:
D. 54
Step-by-step explanation:
54 + 54 = 108, and 72 + 180 equals 180 degrees.
This is due to the fact all angles in a triangle add up to 180 degrees.
Answer:
15/2= faction form
7.5= number form
Step-by-step explanation:
use the KCF
Keep Change Flip
Keep the first number which is 3
Change the division to multiplication
Flip the fraction
So basically 3 times 5 over 2
The multiply straight across
Since 3 isn't a fraction it would be 3 over 1
1 -108
2 +10
3 -200
4 -2500
5 +5200
6-4
7 -16
Answer:
<em>Yes, the sum of a multiple of 3 and a multiple of 3 is closed under addition.</em>
Step-by-step explanation:
Let S = { 3n | n ∈ Z } be the set of multiples of 3.
So if x and y are two multiples of 3, then we can write that
x = 3n and y = 3m for some integers n and m in the set of integers i.e. Z.
To determine that the sum of 3n and 3m is closed under addition. As
x + y = 3n + 3m = 3(n + m) ∴ from the distributive property
As we can check that n + m is also an integer, as n + m ∈ Z
Also, x + y = 3 (n + m) is a multiple of 3.
<em>Therefor, the sum of a multiple of 3 and a multiple of 3 is closed under addition. </em>
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<em>Keywords: closure property under addition, multiple of 3</em>
<em>Learn more about closure property from brainly.com/question/2501010</em>
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