2.24 Question #12 - Thanks

label Mathematics
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schedule 1 Day
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Feb 24th, 2015

multiply eqn 2 by 0.2

-0.02x + 0.01y =-0.22   .................eqn 2

0.02 x + 0.04y = -0.13

add both eqn

0.05y = 0.35

y = 0.35/0.05 = (35/100) *(100/5) = 7

put the value of y = 7 in eqn 2

 -0.1 x +0.5 *7 = -1.1

-0.1x = -1.1 -3.5

x = 4.6/0.1 = 46

Feb 24th, 2015

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Feb 24th, 2015
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