Answer: A 18 1/5 - 22 2/5 - 40 1/5
They're called variables (this sounds like vary because the number that a letter could represent varies) so when i say 1 + x = 3 it is saying that they don't know the value of x yet but of course you can solve that by subtracting 1 from 3 which is 2
Answer:
5. a) 2.140 + 1.725 = 3.865
b) 29.99 + 1.42 = 31.41
c) 6.157 - 1.009 = 5.148
6) 7.4 - 0.0022 = 7.2978 ✅
7.39 - 0.0012 = 7.3888
7. 140minutes / 2 hours and 20 minutes
Answer:
t = 
-------------(1)
The value of t is, 
hour
Step-by-step explanation:
The 1st train travels at 
mph whereas the 2nd train travels at
mph. The trains are headed towards each other. They are s miles apart. In 1 hour their distance is reduced by 
mile
So, in t hour their distance is reduced by 
mile.
Now if the two trains meet after t hour of starting, then,
⇒ t = -------------(1)
If s = 250 unit, = 60 unit and, = 40 unit , then,
from (1), t = (250/(60 + 40)) hour = hour ----(2)
