Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
4.6k views
in Coordinate Geometry by (47.4k points)
closed by

You are downloading a song. The percent y (in decimal form) of mega bytes remaining to get downloaded in x seconds is given by y = -0.1x + 1.

(i) graph the equation.

(ii) find the total MB of the song.

(iii) after how many seconds will 75% of the song gets downloaded?

(iv) after how many seconds the song will be downloaded completely?

1 Answer

+1 vote
by (47.8k points)
selected by
 
Best answer

(i) y = -0.1x + 1

when x = 0 ⇒ y = 1

when y = 0 ⇒ y = 10

(ii) Total MB of song can be obtained when time = 0

∴ x = 0

⇒ y = 1 MB

(iii) Time when 75% of song is downloaded

⇒ remaining % = 25% ⇒ y = 0.25

0.25 = -0. 1x + 1

⇒ 0.1x = 0.75

= 7.5 seconds

(iv) Song will downloaded completely when, remaining % 

= 0 ⇒ y = 0

⇒ 0 = -0.1x + 1

⇒ x = 10

∴ 10 seconds

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...