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What kind of battery does a smoke detector take?
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.
How do you playing amzing grace on the keyboard?
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)
Prove that the line which divides the nonparallel sides of a trapezium proportionally is parallel to the third side.?
To prove that the line which divides the nonparallel sides of a trapezium proportionally is parallel to the third side, we can use the property of similar triangles. Let the trapezium ABCD have sides AB and CD as the nonparallel sides, and side BC as the third side. Let the line dividing AB and CD be denoted as EF, with E on AB and F on CD. By the property of similar triangles, we can show that triangles AEF and BCF are similar, and hence their corresponding angles are congruent. This proves that EF is parallel to BC.
