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denpristay [2]
3 years ago
15

Please help me with my question ASAP ASAP please ASAP

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
8 0

Answer:

D

Step-by-step explanation:

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Use summation notation to write the series 49 + 54 + 59 +... for 14 terms.
My name is Ann [436]

Answer:

Arithmetic sequence states that a sequence of numbers such that the difference between the consecutive terms is constant.

it is given by:  a_n = a+(n-1)d where a is the first term , n is the number of term and d is the common difference.

Given the series: 49 + 54 + 59+ ......

here, Common difference(d) = 5

First term(a) = 49

by definition we have;

For nth term

a_n = a+(n-1)d

a_n = 49+(n-1)5

a_n =49+5n -5 = 5n + 44

To write the series using summation notation for 14 terms

Summation symbol '\sum'

The series for 14th terms is given by;

\sum_{n=1}^{14}(5n +44)


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3 years ago
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Find the measure of the are or central angle indicated. Assume that lines which appear to be
Afina-wow [57]

Answer:

major arc CEB = 320°

Step-by-step explanation:

arc BF = 140°

arc CE = 140°

arc CB = arc EF

arc CB + arc EF = 360-280 = 80

arc CB = 40°

major arc CEB = 360 - 40= 320°

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3 years ago
Find the value of y.
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Answer:

DO it yourself, bud.

Step-by-step explanation:

Just try.

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Calculate the following:
I am Lyosha [343]
<span>-11 /7 * 7 /5</span>= -2(1/5)

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