Solve the Differential Equation by Separable Variable (x-y)dx+(xy+y)dy=0
ANSWER:(y-1)e^(x+y)=c(x+1)

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The diagram shows a 7cm by 6cm rectangle based pyramid. all the diagonal sides - ta, tb, tc and td are length 10cm. m is midpoint of rectangular base. work out height mt to 1 decimal place

Which statement about perfect cubes is true

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?