Answer:
Step-by-step explanation:
The first parabola has vertex (-1, 0) and y-intercept (0, 1).
We plug these values into the given vertex form equation of a parabola:
y - k = a(x - h)^2 becomes
y - 0 = a(x + 1)^2
Next, we subst. the coordinates of the y-intercept (0, 1) into the above, obtaining:
1 = a(0 + 1)^2, and from this we know that a = 1. Thus, the equation of the first parabola is
y = (x + 1)^2
Second parabola: We follow essentially the same approach. Identify the vertex and the two horizontal intercepts. They are:
vertex: (1, 4)
x-intercepts: (-1, 0) and (3, 0)
Subbing these values into y - k = a(x - h)^2, we obtain:
0 - 4 = a(3 - 1)^2, or
-4 = a(2)². This yields a = -1.
Then the desired equation of the parabola is
y - 4 = -(x - 1)^2
Answer:
c
Step-by-step explanation:
Answer:
I can't see the graph
Step-by-step explanation:
Answer:
Step-by-step explanation:
a) 1.8 kg in grams is 1800 g
b) If 6 toys weigh 1800g; then 1 toy weighs 300 g(6:1)
c) If 1 toy weighs 300 g, 4 toys weigh 1200 g and you convert in kg which is 1.2 kg
Answer:
4 gold 8 silver 6 bronze
Step-by-step explanation:
because ratio is 2:4:3 total is 9 in ratio I just double that to get 18
so 4 gold 8 silver 6 bronze
