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nydimaria [60]
3 years ago
12

Find the lengths of AC and BD​

Mathematics
1 answer:
sertanlavr [38]3 years ago
8 0

Answer:  AC = 15, BD = 7.2

<u>Step-by-step explanation:</u>

Use Pythagorean Theorem to solve for AC:

AB² + BC² = AC²

12² +  9²  = AC²

144 + 81  = AC²

        225 = AC²

      √225 = √AC²

          15 = AC

To solve for BD, set up a proportion using the the small side and hypotenuse of ΔABC and ΔADB.

\dfrac{s}{h}:\dfrac{9}{15}=\dfrac{BD}{12}

      \dfrac{9(12)}{15}=BD

            7.2 = BD

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