Answer:
-175
Step-by-step explanation:
5x4=20
30x2=60
20-60=-40
-40-135=175
I hope this helps!
Answer:
That'll help a lot of people in the future ^.^
Step-by-step explanation:
The ratio birds : animals = 13 : 2
so for every 1 animal, 6.5 birds were born
last month: animals = birds - 44
birds - animals = 44
use trial and improvement to find:
if there were 52 birds, there must be 8 animals
CHECK: 52 - 8 = 44
30/75 = 12/x
30*x=75*12
30x=900/:30
x=30
