![S_n = (\frac{n}{2} ) [ 2 a_1 + ( n - 1 ) d ]](/tpl/images/0462/4612/fcaea.png)
![S_9 = (\frac{9 }{2} ) [ 2(-504) + ( 9 - 1 )d ]](/tpl/images/0462/4612/b835d.png)
![S_9 = (4.5 )[ 2 (-504)+ ( 8 ) d ]](/tpl/images/0462/4612/3d9e5.png)
![S_{30} = ( \frac{30 }{2 }) [ 2 (-504) + ( 30-1)(122.5) ]](/tpl/images/0462/4612/b0b02.png)
![S_{30} =(15) [ 2 (-504) + ( 29)(122.5) ]](/tpl/images/0462/4612/2a57d.png)
![S_{30} = [ 2 (-504)(15) + ( 29)(122.5)(15) ]](/tpl/images/0462/4612/436ad.png)
![S_{30} = [ -15120 + 53287.5 ]](/tpl/images/0462/4612/dd11c.png)
The first term of an ap is - 504 while
the sum of its 9 terms is-126 find
sum of its 30 te...
Mathematics, 20.01.2020 08:31 marlesly87
The first term of an ap is - 504 while
the sum of its 9 terms is-126 find
sum of its 30 terms
Answers: 3
Another question on Mathematics
Mathematics, 21.06.2019 16:30
What is the order of magnitude for the number of liters in a large bottle of soda served at a party
Answers: 2
Mathematics, 21.06.2019 19:00
The liabilities of cullumber are $99,000. owner’s capital is $143,000; drawings are $96,000; revenues, $467,000; and expenses, $301,000. what is the amount of cullumber company’s total assists?
Answers: 1
Mathematics, 22.06.2019 00:00
The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle
Answers: 2
You know the right answer?
Questions
Computers and Technology, 19.09.2019 16:00
Mathematics, 19.09.2019 16:00
English, 19.09.2019 16:00
Mathematics, 19.09.2019 16:00
Mathematics, 19.09.2019 16:00
History, 19.09.2019 16:00
Mathematics, 19.09.2019 16:00
Mathematics, 19.09.2019 16:00
Mathematics, 19.09.2019 16:00
Mathematics, 19.09.2019 16:00
