Answer:
Add 4t and 10t
14t
Step-by-step explanation:
When you have the same variable you simply can add them together.
Hope this helps :)

Answer : He spends 2 hours doing paperwork each day.
Hope this helps. - M
The answer would be 1.40. The 3 significant figure are 1.39 and it wants us to round so we look at the 8 in 1.3981 and since 8 > 5 we know to round up.