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9966 [12]
3 years ago
13

Help ASAP!!! What’s the value of x

Mathematics
1 answer:
adell [148]3 years ago
4 0

Answer:

x=8

Step-by-step explanation:

∠B=∠A

Base Angle Thm/ Def. of Iso.

72=9x

x=8

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Answer:

The vertex of this parabola is (-2,-11)

Step-by-step explanation:

One way of finding the x-coordinate of the vertex of a parabola is by using the equation -\frac{b}{2a}

From the function f(x)=x^2+4x-7, we can see that

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This means that

-\frac{b}{2a}=-\frac{4}{2(1)} =-2

So, the x-value of the vertex is -2. Now, we can plug this x-value into the function to find the y-coordinate of the point.

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