(x + y)^2 = (x^2 - 2xy + y^2)
First distribute the ^2 on the left side of the equation to each term inside the parenthesis:
x^2+ 2xy + y^2
Now pick one of the variables to solve for and isolate it:
(solving for x)
x^2 + 2xy + y^2 = x^2 - 2xy + y^2
x^2+ 2xy = x^2 - 2xy
2xy = -2xy
-x = x
x = 0
When you solve for y in the equation it will turn out to be 0 as well
You have eaten 24% of your fiber for the day
Answer:
Step-by-step explanation:
5) 121/11 = 11 meals / day
6) 50/10 = 5 min/call
7) 91/7 = 13 books / week
8) 1275 ants/5 ant holes = 255 ants / ant hole
12,14 to 12,17 is a rise of 3 (14 to 17).
12,14 to 16,14 is a move to the right of 4 (12 to 16)
That means the dimensions of the sandbox are 3ft by 4ft and the perimeter is 2(l+w) or in this case 2 (3+4) or 14 ft
Answer:
€445.5
Step-by-step explanation:
First we calculate the increase percentage and the increase.
Increase = 450 + (10%*450)
Now we must calculate the percentage of the increase.
Increase percentage = 10% of €450 = 450*0.1 = 45
Increase = 450 + 45 = €495
Since the decrease happens to the <em>new </em>number, the decrease and the decrease percentage <em>both </em>must be to the new changed number, which is 495
Decrease = 495 - (10%*495)
Again we must calculate the percentage of the decrease.
Decrease percentage = 10%*495 = 0.1*495 = 49.5
Decrease = 495 - 49.5 = 445.5
So, the value of Erika's ski chalet after the two changes = €445.5