LucasOtto
20.02.2020 •
Mathematics
Examine the following figure.
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if DE || AC, what is the measure of length a?
Please ASAP ANSWER
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Ответ:
21
Step-by-step explanation:
BDE and BAC are similar figures
BD/BA = BE/BC
18/(18+36) = a/(a+42)
18/54 = a/(a+42)
1/3 = a/(a+42)
a+42 = 3a
42 = 2a
a = 42/2
a = 21
Ответ:
Step-by-step explanation: