Most smoke detectors have a single 9 volt battery in them. It is the square type that snaps onto the circuit. You should replace them twice a year, one recommended timing is to swap them out when you change your clocks.
I tried typing all of the notes out but its hard to make sense of it if you read it. The beginning start "B D G D" Generally speaking you find that the song is written in one sharp (Key of G.) Listen and the rest comes pretty easily. You can use these chords to accompany the piece: G (B, D, G) C (C, E, G) and D (D, F# A)
Theorem 3 : Any line parallel to the sides of a trapezium (trapezoid) divides the non-parallel sides proportionally.Given : ABCD is a trapezoid. DC AB. EF AB and EF DC.Prove that : AE/ED = BF/FCConstruction : Join AC, meeting EF in G.StatementsReasons1) EG DC1) Given (in ΔADC)2) AE/ED = AG/GC2) By Basic proportionality theorem3) GF AB3) Given (in ΔABC)4) AG/GC = BF/FC4)By Basic proportionality theorem5) AE/ED = BF/FC5) From (2) and (4)Source: ask-math.com