For answers, turn toPAGE 111Legend:= 1/8 of a measure.= 1/4 of a measure.= 1/4 of a measure.= 3/8 of a measure.= 1/2 of a measure.= 3/4 of a measure.(TI
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Time for a Tune
Easy Musical notation divides time into equal intervals known as measures. The
legend below shows what fraction of a measure each type of note takes up when
you’re playing in 4/4 time. How many measures will have elapsed once you finish
playing the sequence of notes above in 4/4 time?Crowdspeakers
Difficult There are loudspeakers hid-
den in this grid. They project sound
only north, south, east and west, not
diagonally. Their sound intensity drops
with distance: it’s 80 decibels in the
squares adjacent to the speakers,
40 at two squares away, 20 at three
squares away and 10 at four. After that,
the sound dies away completely. If two
or more speakers are close enough
to affect the same square, their inten-
sities add up for that square. However,
no speaker is projecting sound onto a
square occupied by another speaker.Five squares are marked with their total sound intensity. Given this, can you figure
out how many speakers there are and where they stand?rd.ca 107