Answer:
3.2
Step-by-step explanation:
ABCD and JKLM are similar. To find the x, first find the ratio for all of the sides.
AD and JM are similar --> 2.4 / 3 = 0.8
BC and KL are similar --> 4 / 5 = 0.8
DC and ML are similar --> 2.4 / 3 = 0.8
AB and JK are similar --> 4 × 0.8 = 3.2
Hope this helps, thank you :) !!