THE EXERCISES WILL BE ON FILES PLEASE

12. [-/0.12 Points] DETAILS SCALCET8 10.2.041. 0/100 Submissions Used Find the exact length of the curve. x = 7+6t , y= 9 +465, ost=1 Need Help? Read it Watch It 13. [-/0.12 Points] DETAILS SCALCET8 10.2.042. 0/100 Submissions Used Find the exact length of the curve. x = e - 4t, y = Bet/2, osts 3 Need Help? Read it 14. [-/0.12 Points] DETAILS SCALCET8 10.2.045. 0/100 Submissions Used Graph the curve. x = 3e'cos(t), y = 3esin(t), ostsn 30 20 -60 -40 -20 -10 20 X 20 40 60 O -30 30 - X 20 41 60 20 -20 -30 60 20 O Find the exact length of the curve. Need Help? Read It Watch It15. [-/0.12 Points] DETAILS SCALCET8 10.2.051. 0/100 Submissions Used Find the distance traveled by a particle with position (x, y) as t varies in the given time interval. x = 3sin2(t), y = 3cos2(t), osts 5n What is the length of the curve? Need Help? Read It Watch It 16. [-/0.12 Points] DETAILS SCALCET8 10.2.061. 0/100 Submissions Used Find the exact area of the surface obtained by rotating the given curve about the x-axis. x=t, y=t, osts1 Need Help? Read It Watch It 17. [-/0.12 Points] DETAILS SCALCET8 10.TF.001. 0/100 Submissions Used Determine whether the statement is true or false. If the parametric curve x = f(t), y = g(t), satisfies g'(1) = 0, then it has a horizontal tangent when t = 1. True O False Need Help? Read It 18. [-/0.23 Points] DETAILS SCALCET8 10.TF.002. 0/100 Submissions Used Determine whether the statement is true or false. If x = f(t) and y = g(t) are twice differentiable, then day/ dt2 dx 2 d2x/ dt2 True False Need Help? Read It