A boat goes 15 mph in still water, and the rate of the current is t mph.

Mathematics

1 answer:

Advocard [28]2 years ago

4 0

Answer:

a) 15-t mph;

b) 15+t mph.

Step-by-step explanation:

a) When the boat travels upstream, the current hinders the boat (the speed of the boat decreases). Thus, the speed of the boat upstream becomes

15-t mph.

b) When the boat travels downstream, the current helps the boat (the speed of the boat increases). Thus, the speed of the boat downstream becomes

15+t mph.

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Which expressions are equivalent to 10a - 25 + 5b

sergey [27]

Answer:

Step-by-step explanation:

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