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The principal of a college wishes to introduce three new evening classes. The classes are Cake decorating (C), Needlework (N) and Photography (P). In a survey. 160 people who attend evening classes at the college were asked which of these new evening classes they would like to attend. Information about the results of the survey is shown in the Venn diagram. The expression in terms of x, where x is a positive integer, in each subset represents the number of people in that subset. `N 5.x + 7 2 8x x + 9 4x – 1 3x + 8 2 21 + 4 r + 2r – 3 (a) (i) Show that 2r + 9x - 68 = 0 (ii) Hence find the value of x. One of the people surveyed is selected at random. Given that this person would like to attend Photography, b) calculate the exact value of the probability that this person would also like to attend Cake decorating but not Needlework.

The principal of a college wishes to introduce three new evening classes. The classes are Cake decorating (C), Needlework (N) and Photography (P). In a survey. 160 people who attend evening classes at the college were asked which of these new evening classes they would like to attend. Information about the results of the survey is shown in the Venn diagram. The expression in terms of x, where x is a positive integer, in each subset represents the number of people in that subset. `N 5.x + 7 2 8x x + 9 4x – 1 3x + 8 2 21 + 4 r + 2r – 3 (a) (i) Show that 2r + 9x - 68 = 0 (ii) Hence find the value of x. One of the people surveyed is selected at random. Given that this person would like to attend Photography, b) calculate the exact value of the probability that this person would also like to attend Cake decorating but not Needlework.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The principal of a college wishes to introduce three new evening classes. The classes are Cake decorating (C), Needlework (N) and Photography (P). In a survey. 160 people who attend evening classes at the college were asked which of these new evening classes they would like to attend. Information about the results of the survey is shown in the Venn diagram. The expression in terms of x, where x is a positive integer, in each subset represents the number of people in that subset. 5х + 7 8x x + 9 4x – 1 3x + 8 2 212 + 4 x + 2x – 3 (a) (i) Show that 2r + 9x – 68 = 0 (ii) Hence find the value of x. One of the people surveyed is selected at random. Given that this person would like to attend Photography, (b) calculate the exact value of the probability that this person would also like to attend Cake decorating but not Needlework.
Transcribed Image Text:The principal of a college wishes to introduce three new evening classes. The classes are Cake decorating (C), Needlework (N) and Photography (P). In a survey. 160 people who attend evening classes at the college were asked which of these new evening classes they would like to attend. Information about the results of the survey is shown in the Venn diagram. The expression in terms of x, where x is a positive integer, in each subset represents the number of people in that subset. 5х + 7 8x x + 9 4x – 1 3x + 8 2 212 + 4 x + 2x – 3 (a) (i) Show that 2r + 9x – 68 = 0 (ii) Hence find the value of x. One of the people surveyed is selected at random. Given that this person would like to attend Photography, (b) calculate the exact value of the probability that this person would also like to attend Cake decorating but not Needlework.
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