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KIM [24]
3 years ago
9

What is the 32nd term of the arithmetic sequence where a1 = 12 and a13 = -60

Mathematics
2 answers:
aniked [119]3 years ago
8 0

Answer:

- 174

Step-by-step explanation:

The nth term of an arithmetic  sequence is given as

Tn = a + (n - 1)d

where Tn is the nth term

a is the first term , n is the number of term and d is the common difference. As such,

a13 = a + (13 - 1)d

= a + 12d

Given that a1 = 12 and a13 = -60

-60 = 12 + 12d

12d = -72

d = -6

Hence a32 which is the 32nd term

= 12 + (32 - 1)-6

= 12 + (-186)

= - 174

Olin [163]3 years ago
5 0

Answer:

The 32nd term of Arithmetic sequence is -174

Step-by-step explanation:

Given: a_1=12, a_{13}=-60

We are given two term of the Arithmetic sequence.

Formula:

a_n=a+(n-1)d

For  a_1=12

a=12

For a_{13}=-60

a+12d=-60

Using two equation solve for a and d

12+12d=-60

1+d=-5

d=-6

We need to find 32nd term

a_{32}=a+31d

a_{32}=12+31(-6)

a_{32}=12-186

a_{32}=-174

Hence, The 32nd term of Arithmetic sequence is -174

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Step-by-step explanation:

Given the data:

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Coefficient of skewness:

3 * (mean - median) / standard deviation

The mean of the dataset :

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980.9+1036.5+1099.5+1153.9+1409.0+1456.4+1718.4+1721.2

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Median :

980.9, 1036.5, 1099.5, 1153.9, 1409.0, 1456.4, 1718.4, 1721.2

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121.575 / 277.882456

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Using software excel :

Using excel's AVERAGE, MEDIAN and STDEV.P functions, the Coefficient of skewness can be obtained using the formula :

3 * (mean - median) / standard deviation

Coefficient of skewness obtained is 0.438

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2 years ago
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