can someone solve these please

8. [-/1 Points] DETAILS SCALCET9 13.1.040. At what points does the helix r(t) - (sin(!), cos(!), t) intersect the sphere x+ y + 2? = 50? (Round your answers to three decimal places. If an answer does not exist, enter ONE. smaller t-value (x, V. z) = larger /-value (x, y , 2 ) = Need Help? Read It 9. [-/1 Points] DETAILS SCALCET9 13.1.052. Find a vector function, rit], that represents the curve of intersection of the two surfaces. the paraboloid z #7x2+ y and the parabolic cylinder y = ex- to = Need Help? Read it 10. [-/1 Points] DETAILS SCALCET9 13.1.001. Find the domain of the vector function. (Enter your answer using interval notation.) r(r) = (In(t + 3). 16 -12. 2*)