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Gnom [1K]
2 years ago
6

Need help with this one question, please also try to explain.

Mathematics
2 answers:
Advocard [28]2 years ago
6 0

m<ABC + m<CBD = m<ABD

m<ABD = 85 and m<CBD = x

m<ABC + x = 85

m<ABC = 85 - x


lara [203]2 years ago
5 0

<ABC + <CBD = <ABD

substitute <ABD = 85 and <CBD = x

<ABC + x = 85




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Answer:

f(x)=\dfrac{7}{20}\left(x+2\right)^{2}\left(x-1\right).

Step-by-step explanation:

If a graph touches the x-axis at x=c, then (x-c) is a factor of function.

From the given graph it is clear that the graph of function intersect x-axis at x=1 and touch the x-axis at x=-2.

It means (x-1) and (x+2) are not factors of given function but power of (x+2) must be 2.

So, the required function is

f(x)=a(x+2)^2(x-1)    ...(1)

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From the given figure it is clear that the graph passes through the point (-4,-7). So, substitute x=-4 and f(x)=-7 in the above function.

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Substitute a=\dfrac{7}{20} in (1).

f(x)=\dfrac{7}{20}(x+2)^2(x-1)

Therefore, the required function is f(x)=\dfrac{7}{20}(x+2)^2(x-1).

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