<u>Answer:</u>
Alexia ate
fraction of the 8 sandwiches
<u>Step-by-step explanation:</u>
Total number of submarine sandwiches = 8
She cuts 4 sandwiches into each into
halves
Also she cuts the remaining 4 sandwiches into
halves
lets assume the remain
When Alexia eats 2 pieces of
halves she is eating
so there will will be 12 pieces
If the remaining 4 sandwiches is also divided similarly, then there will be 24 pieces
Thus in 24 pieces Alexia is eating 2 pieces.
Hence the fraction will be 
On Reducing it will be
= 
The equation in required form is: 
Step-by-step explanation:
Given equation is:

to write the equation in
form where a and b are integers
subtracting 13 from both sides

To complete the square:
2.x.b = 8x
b = 8x/2x = 4
So adding (4)^2 on both sides

Hence,
The equation in required form is: 
Keywords: Quadratic equation, Vertex form
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Answer:
, 
Step-by-step explanation:
This complex expression is computed from the De Moivre expression:

Given that resultant expression is entirely real, the expression is simplified into this form:


The angle is 0 radians.