Answer:
X=5
Step-by-step explanation:
2X+7=5X-8
7=3X-8
15=3X
5=X
I'm going to put this into vertex form, which is y=a(x-h)^2+k
To do this, you use completing the square. Start by subtracting 1 from each side
-1+y=x^2+2x
Then, divide b (2) by 2 and square it. Add that number to each side. (normally when you complete the square, you take out the gcf of the right side of the equation before you do this. Then, you would multiply (b/2)^2 by the gcf before adding it to the left side. Since there is no gcf, we do not have to worry about this)
2/2=1
1^2=1
-1+1+y=x^2+2x+1
Next, simplify the left side and factor the right side.
y=(x+1)^2
This is vertex form. a=1, h=-1, and k=0
The vertex is (h,k) so it is (-1,0)
hope this helps!
A function is a black box, with a funnel to put numbers in, a chute where
numbers come out, a crank on the side, and some machinery inside.
You put a number in, turn the crank, and a number comes out ... usually
different from the one you put it.
If you do that enough times with enough different numbers, you can figure out
what machinery is inside.
Or, if you know what the machinery is, then when you put a number in,
you can always predict what number will come out.
Answer:
973.2 miles
Step-by-step explanation:
miles travelled = miles on the odemeter after the trip - miles on the odemeter before the trip
8192.6 - 7219.4 = 973.2
Answer: 36:60
Step-by-step explanation:
3x20=60,3x12=36
