Answer:
y = x² - 2x + 1
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
From the graph (h, k) = (2, - 1), thus
y = a(x - 2)² - 1
To find a substitute a point on the curve (0, 1) into the equation
1 = 4a - 1 ( add 1 to both sides )
4a = 2 ( divide both sides by 4 )
a = = , hence
y = (x - 2)² - 1 ← in vertex form
Expand the factor and simplify
y = (x² - 4x + 4) - 1
= x² - 2x + 2 - 1
= x² - 2x + 1 ← in standard form
Answer:
Step-by-step explanation:
1. $800 x 8 yrs. = $6,400
2. the interest = $704
3. total would be $7,104
btw to for step 2 this is what i did:
$800 x 0.11 (the interest rate in a decimal form)= $88 then $88 x 8 years= 704
Answer:
#7. JK = 1
Step-by-step explanation:
So all these problems are similar in the fact that you are given three pieces of information and you need to determine x. Let's look at #7.
We are to find the length JK but we are given it in terms of x. To find the length, we need to find x. Using the information we have about KL and JL, we can find this. Note, the value of JL is 5, and the value of KL is x + 8.
JK + KL = JL
( 2x + 9 ) + ( x + 8 ) = 5
3x + 17 = 5
3x = -12
x = -4
Now that we have the value of x, we can find the value of JK:
JK = 2x + 9
JK = 2(-4) + 9
JK = -8 + 9
JK = 1
Hence, the length of JK is 1.
Using this same basic idea, you can solve all of these problems.
Cheers.
Answer:
4/10 is the same as 40/100
there fore 4/10+40/100=40/100+40/100=
80/100
hope it helps :)
I think the answer is The perimeter!