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bogdanovich [222]
3 years ago
5

May walks a total of 3 miles to and from the library each week. She said she has walked a total of about 300 miles since she sta

rted keeping track of miles walked. Choose Yes or No to tell if the number could be the actual number of miles walked if May rounded to the nearest 10.
Mathematics
1 answer:
Paha777 [63]3 years ago
5 0

Answer:

Ok, she walks 3 miles to and from the library.

So in total, she walks 3 miles two times, then in one week, she walks 2*3mi = 6miles.

She says that she walked about 300 miles in total.

We must see if 300 miles is a multiple of 6 miles.

300mi/6mi = 50.

This means that she would walk about 300 miles since she started counting if she went to the library and back home exactly 50 times (again, since she started counting).

And she does this once a week, then if she started counting 50 weeks ago, then it is possible,

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Determine if diverges, converges, or converges conditionally.
TEA [102]

The given series is conditionally convergent. This can be obtained by using alternating series test first and then comparing the series to the harmonic series.

<h3>Determine if diverges, converges, or converges conditionally:</h3>

Initially we need to know what Absolute convergence and Conditional convergence,

If \sum|a_{n} | → converges, and \sum a_{n} → converges, then the series is Absolute convergence

If \sum|a_{n} | → diverges, and \sum a_{n} → converges, then the series is Conditional convergence

First use alternating series test,

\lim_{k \to \infty} \frac{k^{5} +1}{k^{6}+11 } = \lim_{n \to \infty} \frac{5}{6k} = 0,

The series is a positive, decreasing sequence that converges to 0.

Next by comparing the series to harmonic series,

\sum^{\infty} _{k=2}|(-1)^{k+1} \frac{k^{5} +1}{k^{6}+11 }|=\sum^{\infty} _{k=2}\frac{k^{5} +1}{k^{6}+11 } ≈  \sum^{\infty} _{k=2}\frac{1}{k} = 0

This implies that the series is divergent by comparison to the harmonic series.

First we got that the series is converging and then we got the series is divergent. Therefore the series is conditionally convergent.

\sum|a_{n} | → diverges, and \sum a_{n} → converges, then the series is Conditional convergence.

Hence the given series is conditionally convergent.

Learn more about conditionally convergent here:

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7 0
2 years ago
Read 2 more answers
Find angles 1, 2, and 3
dedylja [7]

Answer:

1 : 51  2 : 39  3 : 90

Step-by-step explanation:

1 : 180(internal angle of triangle) - 90 - 39 =51

2. alternate angles

3. internal angles of rectangle are always 90

6 0
2 years ago
33. Suppose that the scores on a statewide standardized test are normally distributed with a mean of 78 and a standard deviation
tino4ka555 [31]

Given the scores on a statewide standardized test are normally distributed

Mean = μ = 78

Standard deviation = σ = 3

Normalize the data using the z-score by using the following formula and chart:

z=\frac{x-\mu}{\sigma}

Estimate the percentage of scores of the following cases:

(a) between 75 and 81

so, the z-score for the given numbers will be:

\begin{gathered} 75\rightarrow z=\frac{75-78}{3}=\frac{-3}{3}=-1 \\ 81\rightarrow z=\frac{81-78}{3}=\frac{3}{3}=1 \end{gathered}

As shown, the percentage when (-1 < z < 1) = 68%

(b) above 87

87\rightarrow z=\frac{87-78}{3}=\frac{9}{3}=3

The percentage when (z > 3) = 0.5%

(c) below 72

72\rightarrow z=\frac{72-78}{3}=\frac{-6}{3}=-2

The percentage when (z < -2) = 0.5 + 2 = 2.5%

(d) between 75 and 84

\begin{gathered} 75\rightarrow z=\frac{75-78}{3}=-\frac{3}{3}=-1 \\ 84\rightarrow z=\frac{84-78}{3}=\frac{6}{3}=2 \end{gathered}

The percentage when ( -1 < z < 2 ) = 68 + 13.5 = 81.5%

3 0
1 year ago
NEED HELP This is on my study guide and I got it wrong. Explain how you get the answer please. Thank you! Solve for x.
Anna [14]

X = 9

See attached picture:

3 0
4 years ago
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Henry runs a total of 10 miles at 5 track practices. If he continues at the same rate, how many miles will Henry run at the next
Studentka2010 [4]
He runs 1 mile at 2 track practices then 2×8=16
the answer is C) 16 miles
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4 years ago
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