the 1 is the h and the -2 is the k
f(x) = a(x - h)^2 + k
f(x) = a(x-1)^2 -2
to find a substitute x=3, y=6 in
6= a(3-1)^2 -2
6 =a *2^2 -2
add 2 to each side
8 = 4a
a =2
f(x) = 2(x-1)^2 -2 this is the vertex form
distribute to get the standard from
f(x) = 2(x^2-2x+1) -2
2x^2 -4x+2-2
f(x) =2x^2-4x is the standard form
Choice A
Answer:
x = 4
Step-by-step explanation:
I don't see a picture, so I'm assuming that M, N, O are points on a line segment with endpoints M and O.
Point N bisects segment MO, so it's in the middle of that segment. That means the distance from M to N and the distance from N to O are equal.
7x - 15 = 2x + 5
5x - 15 = 5
5x = 20
x = 4
Answer:
6 dogs are there who ate the biscuits
Answer:
The correct answer is perimeter is given by 2 × ( l + w), where l is the length and w is the width of the rectangle.
Step-by-step explanation:
A rectangle has a length of 6 feet and a width of 4 feet. The perimeter of the rectangle can be found using the equation =2×6+2×4.
Let l be the length and w be the width of a rectangle.
Since there four sides of a rectangle, the perimeter is given by adding all the sides.
Therefore perimeter of the rectangle is given by l + l + b + b = 2×l +2×w = 2 × ( l + w).
The equation given by 2 × ( l + w) can also be used to find the perimeter of any given rectangle.
If you are asking what the missing number is all you have to do is multiply -1.5 and 21 the answer -31.5.
