This question is based on the following circle graph. The graph represents the results of a survey in which 400 people were aske
d to identify the TV channel on which they preferred to watch the evening news.
5. How many more people preferred WWCN than WANR?
A. 236
B. 68
C. 76
D. 164
5. How many more people preferred WWCN than WANR?
A. 236
B. 68
C. 76
D. 164
2 answers:
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Answer:
<em>(8.21, -20.79)</em>
Step-by-step explanation:
Given the simultaneous equation;
From 2;
a = 29 + b ....3
Substitute 3 into 1;
Factorize
b = -18±√18²-4(-58)/2
b = -18±√324+232/2
b = -18±√556/2
b = -18±23.58/2
b = -18-23.58/2 and -18+23.58/2
b = -41.58/2 and 5.58/2
b = -20.79 and 2.79
Since a = 29 + b
when b = -20.79
a = 29 - 20.79
a = 8.21
<em>Hence the solution to the system of equation is (8.21, -20.79)</em>