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3 years ago

What is the length of BC? A. 6 2/3 cm B. 5cm C. 4cm D. 6cm

Mathematics

1 answer:

Sergio039 [100]3 years ago

6 0

Thought I already answered this. I must have forgotten to click "add your answer."

We have similar triangle trianges ABC ~ ADE so

BC:AB = DE:AD

BC:2 = 10 : (2+3) = 10:5 = 2:1

So BC=4 because 4:2 = 2:1

Choice C.

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bija089 [108]

Answer:

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Step-by-step explanation:

step 1

Find the radius of the circle

we know that

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we have

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substitute the values

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step 2

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substitute the values

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$\bf \begin{array}{ccll}
n&term&value\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
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3&a_3&20r\\
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\\\\\\
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Step-by-step explanation:

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