Answer:
D. 25x² - 20x + 4
Step-by-step explanation:
The formula for the area of a square is: A = s², where s = a side length of the square since all side lengths of a square are equal. In this case, the side length is represented by '5x', so the original area is A = (5x)² = 25x².
Since Kelly is cutting off one inch from each side of square, this will actually take off 2 total inches from each side, making the new side length '5x - 2'. We can now put this expression in for the values of 's' in our formula for area and use distributive property to solve:
A = (5x - 2)² = (5x - 2)(5x - 2)
Distribute using FOIL: 25x² - 10x - 10x +4 or 25x² - 20x + 4
Answer:
$0.12
Step-by-step explanation:
There are 3 teaspoons in a tablespoon, so our price will be divided by 3 because of the quantity of ground cinnamon it would cost for a teaspoon and 0.36/3=0.12
Answer:
2.25
Step-by-step explanation:
x^2 + 3x =6
Take the coefficient of the x term
3
Divide by 2
3/2 = 1.5
Square it
1.5^2 =2.25
Add this to both sides of the equation
