Multiply 36 by 75 because they need to find how many yards they need
Answer:
<h2>x = -2, y = 5 → (-2, 5)</h2>
Step-by-step explanation:
The average speed of the whole journey of car based mentioned speeds is 48 km/hr.
The average speed is calculated by the formula -
average speed = total distance covered ÷ total time taken. The total distance covered is sum of distance of first and return journey. Total distance covered = 100 + 100
Performing addition
Total distance covered = 200 kilometres
Now total time taken = time taken on first journey + time taken for return journey
Total time taken = distance/speed + distance/return speed
Total time taken = 100/60 + 100/40
Performing division
Total time taken = 5/3 + 5/2
Total time taken = 10 + 15/6
Total time taken = 25/6 hour
Average speed = 200/(25/6)
Average speed = (200×6)/25
Performing division and multiplication
Average speed = 48 km/hr
Learn more about speed -
brainly.com/question/13943409
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Answer:
(S, FS, FFS, FFF)
Step-by-step explanation:
According to the Question,
- Given, A person must enter a 4 digit code to gain access to his cell phone. He will enter codes until he is successful.
- however, he cannot try more than 3 times or the phone will lock him out.
- Let, S denote a successful attempt and F denote a failed attempt.
So, the sample space for this random experiment is
{S, FS, FFS, FFF}
The person stops trying when he successfully enters the code or when he has failed at all 3 attempts .