Mathematics, 24.07.2020 07:01 talahtoo6659
The salary scale for a senior officer starts at N57000
per annum. A rise of N2800 is given at the end of each
Find the total amount of money that the officer will
year.
earn in 14 years.
Answers: 2
![S_n=\frac{n}{2}[2a+(n-1)d]$ ,where: \left\{\begin{array}{lll}$First term, a=57,000\\$Common difference, d=2,800\\$Number of terms, n=14\end{array}\right](/tpl/images/0712/3280/39aa4.png)
![S_{14}=\frac{14}{2}[2(57,000)+(14-1)(2,800)]\\=7[114,000+13*2800]\\=7[150,400]\\=1,052,800](/tpl/images/0712/3280/2acb6.png)
Another question on Mathematics
Mathematics, 21.06.2019 16:00
Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.
Answers: 1
Mathematics, 21.06.2019 18:20
Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.
Answers: 2
Mathematics, 21.06.2019 19:00
The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'
Answers: 1
Mathematics, 21.06.2019 20:50
Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field
Answers: 2
You know the right answer?
The salary scale for a senior officer starts at N57000
per annum. A rise of N2800 is given at the e...
Questions
Mathematics, 26.03.2021 14:00
Mathematics, 26.03.2021 14:00
Mathematics, 26.03.2021 14:00
Physics, 26.03.2021 14:00
Biology, 26.03.2021 14:00
Biology, 26.03.2021 14:00
