WA T2 - MTH264-U22, section 070A, x Course Hero X + V X webassign.net/web/Student/Assignment-Responses/submit?dep=29460870&tags=autosave#question5029181_7 Q L y! apple credit union -... New Tab Settings M Gmail YouTube ) Maps Translate 13. [-/1 Points] DETAILS SCALC9 8.1.049. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Consider the following. -b b x (a) The figure shows a telephone wire hanging between two poles at x = -b and x = b. It takes the shape of a catenary with the equation y = c + a cosh(x/a). Find the length of the wire. (b) Suppose two telephone poles are 40 ft apart and the length of the wire between the poles is 41 ft. If the lowest point of the wire must be 19 ft above the ground, how high up on each pole should the wire be attached? (Round your answer to two decimal places.) ft Need Help? Read It 14 1/1 Dointel DETAILS DDEVIOUS ANSWERS SCALCO 11 2 027 ED MY NOTES ACK YOUR TEACHER PRACTICE ANOTHER W 6:58 PM 7/5/2022 E. . e . u o applecreditunionr... e NewTalJ Settings M Gmall VouTube 9 Maps & Translate SCALC9 8.5.010. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER (a) A type of lightbulb is labeled as having an average lifetime of 1000 hours. It's reasonable to model the probability of failure of these bulbs by an exponential density function with mean it = 1000. (i) Use this model to nd the probability that a bulb fails within the rst 400 hours. (Round your answer to three decimal places.) E (ii) Use this model to nd the probability that a bulb burns for more than 600 hours. (Round your answer to three decimal places.) E (b) What is the median lifetime of these lightbulbs? (Round your answer to one decimal place.) E hr Need Help? 15. [-11 Points] Submit Assignment Save Assignment Progress Home My Assignments Request Extension V