Answer:
Step-by-step explanation:
Hi there!
This equation is written in the form 
. First, use partial factoring:
For x^2-x, the <em>b</em> value is -1 in 
. To complete the square, take the square of half of 1 and add it in the parentheses as the <em>c</em> value:
However, when adding values to one side of the equation, we must to the same to the other side:
Complete the square:
Move 20 to the other side
I hope this helps!
Answer: 4.5 or 4 1/2
Step-by-step explanation:
Working it completely in my head, I come up with 2,880 unique ways. I'll check it when I get back to a computer with an actual keyboard, and also explain my reasoning if anybody's interested.
Answer:
371.40for a year so 371.40÷12month=30.95monthly
Answer:
61.6 dollars
Step-by-step explanation:
So, lets go over what we know:
The shows orginally cost 88 dollars.
They are 30% less than that.
This basically means that the shoes will cost 70 percent of their orginal price.
We can basically find the new cost by multiplying the 88 dollars by the 70 percent.
Or, multiplying 88 by 0.7, which is the decimal form of 70%.
88*0.7=61.6
How did I get this?
Multiply 80 by 0.7:
7*8=56
We have 0.7 so it = 5.6
However, it's tens place is 80, not 8, so it will be = 56
It is the same thing in the ones place, however it is 8 not 80, so it will be 0.7*8
= 5.6
56+5.6=61.6
So 61.6 is our answer.
Hope this helps!
