Questions asked by aquasense

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• A computer takes tokens for 10 minutes and for 30 minutes, 30% of the tokens used are for ten minutes. The tokens cost £1 for 10 minutes and £2 for 30 minutes. What is the mean for the amount of time per token?
  
• What is the probability that exactly one of them is female and exactly one is a child?
  
• How do I prove that this is is true?
  
• What happens graphically when you set equations equal to each other?
  
• Does the ball hits the ceiling?
  
• How do I split this into partial fractions?
  
• Finding velocity when given magnitude and direction?