A(n) = current term
a(n + 1) = next term
in a geometric sequence, the next term comes from a product of the current term and the common ratio.
the common ratio can be any value, let's say use r = ½.
if the current term is say hmmm 40, the next term is 40*½ , or 20, so indeed, the next term is smaller.
Answer: the observer should consider to eliminate or to retake the third measure.
Explanation:
The four measures taken are 124.53, 124.55, 142.51 and 124.52.
As it can be easily seen, the third measure is much different from the other three. This means that something went wrong during the observation: it can be either the measure taken wrong or that the number was written wrong (if you switch the 2 and the 4 you get a number similar to the other ones).
If the third measure is not considered, an estimate of the mean would place it around 124.5, while if the outlier (the detatched number) is considered an estimate of the mean would increase to about 129.
Therefore, in order to obtain a more reliable mean, the observer should consider to eliminate or to retake the third measure.
<u><em>Answer:</em></u>
<u><em>5120 or 2560.One of these</em></u>
<u><em>Step-by-step explanation:</em></u>
<u><em>1. 10*2=20</em></u>
<u><em>2. 20*2=40</em></u>
<u><em>3. 40*2=80</em></u>
<u><em>4. 80*2=160</em></u>
<u><em>5. 160*2=320</em></u>
<u><em>6. 320*2=640</em></u>
<u><em>7. 640*2=1280</em></u>
<u><em>8. 1280*2=2560</em></u>
<u><em>9. 2560*2=5120</em></u>
Answer:
1310.4
Step-by-step explanation:
26 x 12= 312 x 4.2= 1310.4
