Answer:

Step-by-step explanation:
Collect like terms and calculate the sum
Answer:
36.72
Step-by-step explanation:
if I'm wrong could you please tell me? good luck and if you have any other question you can ask me bye.
Answer:
s = 
Step-by-step explanation:
s = ut +
at² ( substitute the given values into the equation )
s = ( 3 ×
) + (
× - 12 × (
)² )
= 1 + (- 6 ×
)
= 1 + ( -
)
= 1 - 
= 
Communicative Property: (5+7) +3
Associative prop: (3+5) +7 or (3+7) +5
And the last one, I don’t fully understand what it is asking, but I believe it is asking for the answer which would be 15