3 years ago

The graph of a quadratic function y = x2 is symmetric about the ________that passes through its vertex.

Mathematics

1 answer:

7nadin3 [17]3 years ago

3 0

Answer:

Vertical line

Step-by-step explanation:

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Pls help With this question thank you

Lapatulllka [165]

Answer:

$CD=4 \text{ cm }$

Step-by-step explanation:

We have a similarity of triangles. Once the side BC and ED are parallel,

$\frac{BC}{AC} =\frac{ED}{AD}$

$\frac{10}{AC} =\frac{5}{4}$

Once $AC=AD+CD \Rightarrow AC=4+CD$

$\frac{10}{4+CD} =\frac{5}{4}$

$5CD+20=40$

$5CD=20$

$CD=4 \text{ cm }$

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