The time needed at 2 meters per second for both rounds would be 100/2 s or 50 seconds. For the first lane he already used 50/1.5 -> 33.33 seconds, so he would need to cover the other 50 meters in exactly 16.67. 50m divided by the 16.67 seconds he has left means he has to swim at a speed of 3 meters per second.
Answer:
b
Step-by-step explanation:
I think you need to make the 6 positive and then add it to 13 which would give you a=19
4.2 because u do the substatition and the formula
Answer:
∠Y= 120
Step-by-step explanation: