Section+9.2

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1.(from worksheet) (x^2/100)+(y^2/36)=1 worked by ellen wagner checked by Rebecca Little

2. checked by Layne Miller 8. C: (0,0) V: (8,0) (-8,0) F: (6,0) (-6,0) E: 3/4

worked by shannon fenton

7. e: .903 f: square root of 22 c: (0,0)) worked by olivia mohle checked by hayden smith

14. x^2/1 + y^2/25 = 1 center: (0,0) verticies: (0,5) and (0,-5) foci: (0,2root6) and (0,-2root6) worked by Grant Lund Checked by Jack Bentele

28. [(x^2)/ 36]+ [y^2)/ 32] 30 [(x^2)/ 4] +[y^2)/ 16] 28 and 30 worked by Shannon McPhillips Checked by Nolan Blair

45. major axis length = 5 worked by Andrew Dinwoodie

46. x^2/17.94^2+y^2/4.361^2=1 worked by zack barth checked by ellie tendall

47. x^2/8.16+y^2/.116=1 worked by Henry Bettencourt

2. l= 112 ft a^2 - b^2 = c^2 56^2 - b^2= 50^2 3136- b^2= 2500 b= 25.2 ft Worked by Mary Catherine Edwards

3. x 2 /2500 + y 2 /625 = 1 225/2500 + y 2 /625 = 1 y = √( 625(1-225/2500)) = 23.848 ft worked by Hadi Abbas checked by Samantha Ehlinger

4. checked by philip sweet not here

8. not here checked by Hikari Suzuki