February 21, 2017

Homework Help: Mathematics

Posted by INDIANA on Wednesday, July 4, 2012 at 3:49pm.

A drinking straw of length 21 cm is cut into 3 pieces

the length of the first piece is x cm

the second piece is 3cm shorter than the 1st piece

the third piece is twice as long as first piece

(a) state in terms of x the length of the pieces (i think i figured that one out...1st piece= 21cm-xcm, 2nd piece= xcm-3cm and the 3rd piece= xcm X 2cm i don't know if its right)

(b) write an expression in terms of x to represent the sum of the lengths of 3 pieces.

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