Please help me out with this!

1 answer:

dsp733 years ago

8 0

We know that
Keisha’s reasoning
to create the sequence we are going to need the first two terms, so if we only have the first term, we can not calculate the sequence

Personal conjecture
let
a1=2
a2=4
a3=8
a4=?
a2/a1=4/2------> 2--------> a2=a1*2
a3/a2=8/4------> 4--------> a3=a2=2
so
this is a geometric sequence with a common ratio of 2
a4=2*a3-------> a4=2*8------> a4=16

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Now we know that Repeated Addition means adding each group together and it is also known as Multiplication.

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we can Find Total miles she walked by Multiplying Number of miles walked on each day with number of days.

framing in equation form we get;

Total miles she walked = $\frac{9}{10}+\frac{9}{10}+\frac{9}{10}+\frac{9}{10}+\frac{9}{10}+\frac{9}{10}+\frac{9}{10}= \frac{9+9+9+9+9+9+9}{10} = \frac{63}{10}\ miles$