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guajiro [1.7K]
3 years ago
8

Suppose that the expected value of a measurement is 2.0 m. Which of the following sets of measurements is the MOST accurate? A.

1.4 m, 1.6 m, 1.8 m, 2.0 m B. 1.6 m, 1.5 m, 1.6 m, 1.6 m C. 1.9 m, 2.3 m, 2.2 m, 1.8 m D. 4.0 m, 3.4 m, 1.0 m, 6.0 m
Mathematics
1 answer:
zavuch27 [327]3 years ago
4 0

Answer:

C is probably the answer

Step-by-step explanation:

1.9 Is approximately 2

2.3 Is approximately 2

2.2 is also approximated to 2

1.8 Is also approximately 2

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Mohamed and Li Jing were asked to find an explicit formula for the sequence -5, -25, -125, -625,....
Nuetrik [128]

Answer:

Li Jing's formula i.e.  \boxed{g_n=-5\cdot \:5^{n-1}}  is right.

Step-by-step explanation:

Considering the sequence

-5,\:-25,\:-125,\:-625,...

A geometric sequence has a constant ratio r and is defined by

g_n=g_0\cdot r^{n-1}

\mathrm{Compute\:the\:ratios\:of\:all\:the\:adjacent\:terms}:\quad \:r=\frac{g_{n+1}}{g_n}

\frac{-25}{-5}=5,\:\quad \frac{-125}{-25}=5,\:\quad \frac{-625}{-125}=5

\mathrm{The\:ratio\:of\:all\:the\:adjacent\:terms\:is\:the\:same\:and\:equal\:to}

r=5

So, the sequence is geometric.

as

\mathrm{The\:first\:element\:of\:the\:sequence\:is}

g_1=-5

r=5

so

g_n=g_1\cdot r^{n-1}

\mathrm{Therefore,\:the\:}n\mathrm{th\:term\:is\:computed\:by}\:

g_n=-5\cdot \:5^{n-1}

Therefore, Li Jing's formula i.e.  \boxed{g_n=-5\cdot \:5^{n-1}}  is right.

8 0
3 years ago
Tell me the answer to 10 times 2000 equal blank thousand equal blank
timofeeve [1]
10x2000= 20,000
2000
X 10
--------
0000
20000
5 0
3 years ago
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