Mathematics, 14.02.2022 01:00 tasnimsas3
A theater has 22 rows of seats. The first row has 18 seats, the second row has 20 seats, the third row has 22 seats, and so on. How many seats are in the theater?
Answers: 3
![S_{n}= \frac{n}{2}\bigg[2a+(n-1)d\bigg]](/tpl/images/2658/2906/8f3cb.png)
![\implies S_{22}= \frac{22}{2}\bigg[2(28)+(22-1)(2)\bigg]](/tpl/images/2658/2906/68059.png)
![\implies S_{22}=11[56+(21)(2)]](/tpl/images/2658/2906/08ffd.png)
![\implies S_{22}=11[56+42]](/tpl/images/2658/2906/d02ed.png)
![\implies S_{22}=11[98]](/tpl/images/2658/2906/5288e.png)
Another question on Mathematics
Mathematics, 21.06.2019 12:30
As soon as look at the parallelogram abcd shown below: the table below shows the steps to prove that if the quadrilateral abcd is a parallelogram, then its opposite sides are congruent: which choice completes the missing information for reason 5 in the chart? (6 points) congruent parallelograms congruent triangles similar angles similar triangles
Answers: 1
Mathematics, 21.06.2019 22:30
We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get
Answers: 1
Mathematics, 21.06.2019 23:30
Walking at a constant rate of 8 kilometers per hour, juan can cross a bridge in 6 minutes. what is the length of the bridge in meters?
Answers: 1
You know the right answer?
A theater has 22 rows of seats. The first row has 18 seats, the second row has 20 seats, the third r...
Questions
Physics, 16.04.2021 03:50
Social Studies, 16.04.2021 03:50
Mathematics, 16.04.2021 03:50
History, 16.04.2021 03:50
Mathematics, 16.04.2021 03:50
Mathematics, 16.04.2021 03:50
History, 16.04.2021 03:50
Social Studies, 16.04.2021 03:50
French, 16.04.2021 03:50
