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Archy [21]
3 years ago
10

Help me match these formulas pleasee:(

Mathematics
1 answer:
babunello [35]3 years ago
6 0
1. A= \frac{ah_a}{2},P=a+b+c
2. A= \frac{r^2\pi\alpha}{360^o}
3. l= \frac{r\pi\alpha}{180^o}
4. A=ab,P=2(a+b)
5. C=2r\pi
6. A=r^2\pi
7. P=na,S_n=(n-2)180^o,\alpha= \frac{S_n}{n}
8. P=3a,A= \frac{a^2\sqrt{3}}{4}
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Answer:

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OR

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Step-by-step explanation:

Vertex form of a parabola is given as:

y = a ( x - h ) ^2 + k

Where (h,k) is the vertex and (x,y) are the points on the parabola.

We are given that, the vertex is (3, -2) and another point on parabola is given as (2, 3).

h = 3,k = -2

First of all, putting the vertex in the vertex equation as given above:

y = a ( x - 3 ) ^2 + (-2)

Now, putting the values of x, y as 2, 3 and let us find the unknown variable a:

3 = a ( 2 - 3 ) ^2 + (-2)\\\Rightarrow 3 = a -2\\\Rightarrow a = 5

Therefore, the equation in vertex form can be written as:

y = 5 ( x - 3 ) ^2 -2

OR

y+2= 5 ( x - 3 ) ^2

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