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notka56 [123]
3 years ago
8

Find the first term of the following geometric sequence: , 15, 45, 135, 405,

Mathematics
1 answer:
mash [69]3 years ago
6 0
The answer is 5 If you dont like this you first see what you can multiple to get to 15 first.
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Of the 250 students at Moreland middle school, 80% ride the bus to school. Monica wants to know the number of students that ride
LekaFEV [45]
You would put 80 x
—- = ——
250 100

So those are fractions^
The first thing you do here is cross-multiply. (It doesn’t matter which sides you multiply together first)
So 250 times x= 250x
Then cross multiply 80 and 100 to get:
8,000
You now have ur new equation:
250x=8,000
The next thing you do here is divide both sides by 250, since 250 is the number with a variable in it (aka “x”)
You then get:
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I hope that helped you understand !
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