Answers created by Iván Á.

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• A jogger runs in a straight line with an average speed of 5 m/s for 4 minutes, then finishes with an average speed of 4 m/s for 3 minutes. What is his total displacement?
  
• What is the norm of #< 5 , -2, 3 >#?
  
• How much work would it take to push a # 1 kg # weight up a # 2 m # plane that is at an incline of # (5pi) / 12 #?
  
• What is the average speed of an object that is still at #t=0# and accelerates at a rate of #a(t) =3t-1# from #t in [2, 3]#?
  
• How do you find the amplitude and period of #y= 4/3 sin (2/3)x#?
  
• How do you find the vertex of a parabola # y=y=[x]^2-5#?
  
• How do you write 70 million in scientific notation?
  
• Question #c8c7c
  
• How do you solve #( y+2)/4 - (y-1)/5 =15#?
  
• How do you differentiate #(2x^2-4x+4)e^x#?
  
• How do you find the solution to the quadratic equation #x^2+8x+7=0#?
  
• What is the period and amplitude and frequency for #s = 3 cos 5t#?
  
• How do you find the limit of #x^2cos(pi / x)# as x approaches 0?
  
• In the right triangle ABC, angle C equals 90 degrees. If angle B is 63 degrees, what is the measure of angle A?
  
• How are mass and weight related?
  
• How do electrons move in AC circuit?