Questions asked by elsie ☆

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• How do you simplify 2#sqrt((x^7y^5)#?
  
• A golf ball is hit an angle of 35 degrees above the horizontal and it lands in a hole 120 m away 4.2 s later. Air resistance is negligible.?
  
• The sum of two numbers is 20. Find the minimum possible sum of their squares?
  
• The sum of two numbers is 28. Find the minimum possible sum of their squares?
  
• 3800 people buy $2 fare tickets. When the fare price raises $0.20, 65 customers are lost. If the company wants to make $10950 what must the fare be?
  
• A horizontal force is applied to the textbook. Find the force of friction the desk exerts on the textbook, if the applied force is: 0N, 12.9N[S], 39[W], 45[E]?
  
• A 12.4kg mass is being pushed, from rest, along a level surface. The coefficient of kinetic friction between the mass and the surface is 0.35. The mass is being pushed with a force of 74N [North]. The force is being exerted for 6.4 s. ?
  
• What is the minimum acceleration of the car for this to happen? (Assume no air resistance)
  
• A species of bacteria has a population of 250 at 6 a.m. It doubles every 8 hours. Determine the function that models the growth of the population. Determine the population at 9 p.m.?
  
• Two cars are 175m apart, facing each other. At that instant, the first car is traveling at 9.0 km/h [W] and is accelerating at 3.6m/s^2 [W]. The second car is traveling at a constant velocity of 21.5 m/s [E].?
  
• At a construction site, a bolt slips over the edge of a steel girder, which is 35 m above the ground. At the same instant, an apple is thrown vertically upwards from the ground with a speed of 15 m/s. How do you solve parts a) and b)?