Answer:
20%
Step-by-step explanation:
1. We assume, that the number 1250 is 100% - because it's the output value of the task.
2. I assume, that x is the value we are looking for.
3. If 100% equals 1250, so we can write it down as 100%=1250.
4. We know, that x% equals 250 of the output value, so we can write it down as x%=250.
5. Now we have two simple equations:
1) 100%=1250
2) x%=250
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=1250/250
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 250 is what percent of 1250
100%/x%=1250/250
(100/x)*x=(1250/250)*x - we multiply both sides of the equation by x
100=5*x - we divide both sides of the equation by (5) to get x
100/5=x
20=x
x=20
now we have:
250 is 20% of 1250
Answer: 1. 13.752 2. 264
Step-by-step explanation:
hope this helps
You have to complete the squares on both the x terms and the y terms in order to solve this. Move the 20 over to the other side so it's negative. Group the x terms together and complete the square to get (x^2+2x+1) and then do the same with the y terms: (y^2-4y+4). You have to add 1 and 4 to other side with the 20 to get a 25. Then create 2 perfect square binomials within each x and y value to get the vertex coordinates: (x+1)^2 + (y-2)^2 = 25. This tells us that the vertex is located at (-1, 2) and the radius is the square root of 25 which is 5.So the answer is the first choice above.
N^2 because 2n is the same as n+n, but n^2 is the same as the product of n and n
