Completing the square is done as follows:
1. Write the equation in a way that the constants are in the right side while the terms with x are on the left.
<span>9x2 +54x = 7
</span>
2. Make sure that the coefficient of the x^2 term is 1.
<span>9(x2 + 6x) = 7
</span>
3. Adding a term to both sides that will complete the square in the left side. This is done by dividing the coefficient of the x term by 2 and squaring it. Note: The same amount should be added to the right side to balance the equation.
<span>9(x2 + 6x + 9) = 7 + 81
9(x+3)^2 = 88
</span>
Marked price = 200 + 40% of 200 = 200 * 0.4*200 = 200 + 80 = $280
price after 25% discount = 280 - 0.25*280
can you work that out?
So a going a whole circle around is 180 so if it goes 1/4 of it, it will be 720
The recursive rule is
.
The iterative rule is
The recursive rule is given by the formula
, where d is the common difference. Our common difference is -4, which gives us the recursive rule above.
The iterative rule begins with the formula
, where a₁ is the first term and d is the common difference. Our first term is 10 and our common difference is -4: