Well To me I think it would be C: Both 1 and 2 Because When you look at the arrow and know the direction of Clockwise going right, you can already mark 3 off because the arrow would be going Left and pulley 1 and 2 are going right (Pully 1 is going right but down, so that would count.).
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The correct answer is 23
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1. Read the Problem
2. Start working it out
3. Write answer in
4. Guess if you don't know
Below is the proof that the sum of two odd numbers is always even.
<h3>
How to prove that the sum of two odd numbers is even?</h3>
First, remember that an even number is written as:
x = 2*n
Where n is an integer number.
While an odd number will be written as:
y = 2*n + 1
Now, let's say that we have two odd numbers:
A = 2k + 1
B = 2n + 1
If we add these we get:
A + B = (2k + 1) + (2n + 1) = 2k + 2n + 2 = 2*(k + n + 1)
And k + n + 1 is an integer number, then we can write:
k + n + 1 = N
So we get:
A + B = 2N
Then the sum of A and B is an even number.
Thus, we proved that for the sum of any two odd numbers, the outcome will always be even.
If you want to learn more about odd numbers, you can read:
brainly.com/question/543861