Water at temperature 100 degree Celsius cools in 10 minutes to 88 degree Celsius in a room of temperature 25 degree Celsius, then ...
x+y+z=100-x
6x+10+y=100
y+10-z=100
a^2-3a+1=0 find a^3 +1/a^3
10+6x+y=100
a ^2-4a+1=0 finda^3+1/a^3
find x if 2^x-7=4^x-4
2x+by=8. 2(2x+3y)=16Do this in substitution method Do this in substitution method
2x+by=8. 2(2x+3y)=16Do thi...
