An astronaut on the moon throws a baseball upward. The astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 40 ft per sec. The heights of the ball in feet ispran given by the equation s= -2.71² +40t +6.5, where t is the number of seconds after the ball was thrown. Complete parts a and b.(...)a. After how many seconds is the ball 20 ft above the moon's surface?cessAfter seconds the ball will be 20 ft above the moon's surface.(Round to the nearest hundredth as needed. Use a comma to separate answers as needed.)Help me solve this View an example Get more help.Clear allCheck answerJDII-0FSinsertF1291°FMostly sunnyFIAZC8-in-12WSXaltF3#3EDF4C$4RF%5VTF6GA6B28Y(DELL)00HodaÅF9H&7NF8UJ★8-Mprt scF10(9K۔O<althome)OLF11PVendctrl-:;{+ 11=delete[B?1<112:16/9/b36

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An astronaut on the moon throws a baseball upward. The astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 40 ft per sec. The heights of the ball in feet is given by the equation s= -2.71² +40t+6.5, where t is the number of seconds after the ball was thrown. Complete parts a and b. *** a. After how many seconds is the ball 20 ft above the moon's surface? -S After seconds the ball will be 20 ft above the moon's surface. (Round to the nearest hundredth as needed. Use a comma to separate answers as needed.)

An astronaut on the moon throws a baseball upward. The astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 40 ft per sec. The heights of the ball in feet is given by the equation s= -2.71² +40t+6.5, where t is the number of seconds after the ball was thrown. Complete parts a and b. *** a. After how many seconds is the ball 20 ft above the moon's surface? -S After seconds the ball will be 20 ft above the moon's surface. (Round to the nearest hundredth as needed. Use a comma to separate answers as needed.)

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter4: Polynomials

Section4.8: Rate-time-distance Problems

Problem 4OE

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