Answer:
The total cost would be 29.15$
Step-by-step explanation:
multiply 27.50 by 0.06 to get 1.65. Then add 27.50 and 1.65, to get 29.15
Answer:
The size of a television screen is 
Step-by-step explanation:
Let
x-----> the length of the diagonal of the screen
we know that
Applying the Pythagoras Theorem

we have


substitute the values



The answer is (x+1)²= x²+2x+1
so x^2 + 2x must be added 1 to become x²+2x+1=<span>(x+1)²</span>