<u>ANSWER</u>
(C) y
<u>EXPLANATION</u>
We have two equations:
The first one is

The second equation is

Let us make z the subject of this second equation:

We now add equation (1) and (3) to get:

We simplify to get:


Divide throu by 2.



The correct answer is C
The value simplified is <u>a²</u>
-
In a power division with equal bases - we subtract the exponents and keep the bases.
- The representation of this expression in formula is given by:

<h3>Resolution </h3>


So, the answer of this expression is <u>a²</u>
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Answer: 6 1/8
Step-by-step explanation:
1/8 x 2 = 1/8 x 2/1 = 2/8 = 1/4
1/4 x 3 = 1/4 x 3/1 = 3/4
3/8 x 4 = 3/8 x 4/1 = 12/8 = 1 4/8 = 1 1/2
1/2 x 3 = 1/2 x 3/1 = 3/2 = 1 1/2
5/8 x 1 = 5/8 x 1/1 = 5/8
3/4 x 2 = 3/4 x 2/1 = 6/4 = 1 2/4 = 1 1/2
Start with the big number first.
1 1/2 = 1 4/8
1 1/2 = 1 4/8
1 1/2 = 1 4/8
5/8 = 5/8
3/4 = 6/8
1/4 = 2/8
Add them all up.
1 4/8 + 1 4/8 = 2 8/8 = 3
3 + 1 4/8 = 4 4/8
4 4/8 + 5/8 = 4 9/8 = 5 1/8
5 1/8 + 6/8 = 5 7/8
5 7/8 + 2/8 = 5 9/8 = 6 1/8