Given:
The number of seats in the first row is <em>a</em>₁ = 12.
The series of the increasing number of seats is 12, 14, 16......
The objective is to find the total number of seats in the first 12 rows.
Explanation:
The difference between the number of seats in each row can be calculated by the difference between the successive terms of the series.

The number of rows to be calculated is <em>n</em> = 12.
To find the number of seats:
The number of seats presents in the first 12 rows can be calculated as,

On plugging the obtained values in the above equation,

Hence, the total number of seats in the first 12 rows is 276.
Answer: 1
Step-by-step explanation:
6+4×5-5²
=6+20-25
=1
Answer:
Slope in this case is -2
Y-Intercept in this case is 5, or (0, 5)
Step-by-step explanation:
In order to identify the slope and y-intercept, you must put the equation is y = mx + b form. This is quite simple! Don't panic! You got this :)
4x + 2y = 10
Move x to the right
2y = -4x + 10
Divide by y's coefficient
y = -2x + 5
Slope in this case is -2
Y-Intercept in this case is 5
Calculate mean:
4+3+4+5+6+6+8+4=40
40/8=5
Calculate MAD:
1+2+1+0+1+1+3+1=10
10/8= 1.25
Final answer: 1.25
<h3><em><u>given</u></em><em><u>:</u></em></h3>
<em><u>length</u></em><em><u>=</u></em><em><u> </u></em><em><u>15cm</u></em>
<em><u>width</u></em><em><u>=</u></em><em><u> </u></em><em><u>7cm</u></em>
<h3><em><u>to</u></em><em><u> </u></em><em><u>find</u></em><em><u>:</u></em></h3>
<em><u>area</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>rectangle</u></em><em><u>.</u></em>
<h3><em><u>solution</u></em><em><u>:</u></em></h3>
<em><u>area</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>rectangle</u></em><em><u>=</u></em><em><u> </u></em><em><u>length</u></em><em><u> </u></em><em><u>×</u></em><em><u> </u></em><em><u>width</u></em><em><u> </u></em>
<em><u>a</u></em><em><u>=</u></em><em><u> </u></em><em><u>l</u></em><em><u> </u></em><em><u>×</u></em><em><u> </u></em><em><u>w</u></em>
<em><u>a</u></em><em><u>=</u></em><em><u> </u></em><em><u>1</u></em><em><u>5</u></em><em><u> </u></em><em><u>×</u></em><em><u> </u></em><em><u>7</u></em>
<em><u>=</u></em><em><u> </u></em><em><u>1</u></em><em><u>0</u></em><em><u>5</u></em><em><u> </u></em><em><u>cm</u></em><em><u>^</u></em><em><u>2</u></em>