Question

If ABC, if DE || BC, AD/AB= 4 /7 and AC = 21 cm then AE equals to
a) 28 cm b) 18 cm c) 15 cm d) 12 cm​

Answer 1

Answer:

AE = 12 cm

Step-by-step explanation:

$= \frac{AD}{AB} = \frac{AE}{AC} \\\\\\= \frac{4}{7} = \frac{x}{21} \\\\\\= \frac{84}{7} = x \\\\\\= 12 cm = x$

Mark as Brainliest

Answer 2

Answer:

D

Step-by-step explanation:

DEIIBC SO,AD/DB=AE/EC (BY THEOREM)

DB/AD=EC/AE. (applying converse add converse)

DB/AD+1=EC/AE+1

DB+AD/AD=EC +AE/AE

AB/AD=AC/AE

AD/AB=AE/AC

so,4/7=x/21

84/7=x

=12

thankyou