2 years ago

SOS! Can some please help me!

Mathematics

2 answers:

Wewaii [24]2 years ago

8 0

Answer:

8.9

Step-by-step explanation:

1. DE:BC=AD:AB

2. AD=AB+BD, but according to the conditions AB=5, then

AD=5+BD.

3. after the substitution DE=16; BC=9; AB=5 and AD=5+BD into the formula:

16:9=(5+BD):5;

$\frac{16}{9} =\frac{BD+5}{5};$

BD=80/9 - 5≈3.9.

4. if AD=AB+BD, then AD=5+3,9=8,9

DIA [1.3K]2 years ago

4 0

Answer:

8.9 is your answer to the question

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