Answer:
tex]a^2 - 4b \neq 2[/tex]
Step-by-step explanation:
We are given that a and b are integers, then we need to show that 
Let 
If a is an even integer, then it can be written as 
, then,
RHS is a fraction but LHS can never be a fraction, thus it is impossible.
If a is an odd integer, then it can be written as 
, then,
RHS is a fraction but LHS can never be a fraction, thus it is impossible.
Thus, our assumption was wrong and .
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
If you're looking for another way to express decimal numbers, try this. Any decimal can be expressed by dividing the decimal number without the decimal point by how many place values it has. Example: .08 can be expressed by taking 08 and dividing it by 100 (because the decimal goes out to the hundredths place). So, .08 = 8/100 or 4/50 or 2/25.
