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kobusy [5.1K]
3 years ago
7

(1 + 2/7) +(2 + 1/3)*x+ 3/14 +x=9

Mathematics
1 answer:
BabaBlast [244]3 years ago
7 0

Answer:

(1 + 2/7) +(2 + 1/3)*x+ 3/14 +x=9

140x = 315

x = 9

4

= 2.25

Step-by-step explanation:


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k:\ y=m_1x+b_1\ \ \ \ and\ \ \ \ l:\ y=m_2x+b_2\\ \\the\ line\k\ is\ perpendicular\ to\ the\ line\ l\ \ \ \Leftrightarrow\ \ \ m_1\cdot m_2=-1\\----------------------------\\\\A.\\2y=-3x+5\ \ \Rightarrow\ \ \ y=-  \frac{3}{2}  x+2.5\ \ \Rightarrow\ \ m_1=- \frac{3}{2} \\\\2x+3y=4\ \ \Rightarrow\ \ 3y=-2x+4\ \ \Rightarrow\ \ y=- \frac{2}{3}x+1 \frac{1}{3}  \ \ \Rightarrow\ \ m_2=- \frac{2}{3} \\\\m_1\cdot m_2=- \frac{3}{2} \cdot (- \frac{2}{3})=1 \neq -1

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