Answer:
plzzzzz
Step-by-step explanation:
lolzzzz
The greatest common factor for 21 is 7
For 30 is 15
49 is 7
I’m no totally sure but i think that is right
and 
both have a common denominator, so you can combine them into a single fraction:
You cannot simplify this fraction further:
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Answer:
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Answer:
150 dived by 625 is 0.24 I'm not sure how to explain it
Answer:
7 mph
Step-by-step explanation:
If b is the rate of the boat, and s is the rate of the stream, then:
b − s = 4
b + s = 10
Solve the system of equations with substitution or elimination. Using elimination, add the equations together:
2b = 14
b = 7
The boat's rate is 7 mph.
