Answer:
20 minutes
Step-by-step explanation:
The mean, or average of a data set can be found by adding all the values together, and dividing by the number of values.
The data set is: 20 minutes, 22 minutes and 18 minutes
1. Add the values together
Add all the numbers in the set together.
Data set: 20, 22, 18
Add them: 20+22+18
60
2. Divide by the number of values
Count how many numbers are in the set.
In this set, there are 3 numbers.
Divide 60 by 3
60/3 =20
20 minutes
His mean time is 20 minutes.
perimeter =48
18+18+6+6=48
x-12=x/3
Multiply both sides by 3
3x-36=x
3x=x+36
2x=36
x=18
18-12=18/3
6=6
One side 18 another side 6
First four terms are 7, -13, 67, -253
<em><u>Solution:</u></em>
Given that,
<em><u>The formula to find nth term is given as:</u></em>
We can find the first four terms by substituting n = 2, 3, 4
<em><u>First term:</u></em>
f(1) = 7
<em><u>Second term:</u></em>
Substitute n = 2
<em><u>Third term:</u></em>
Substitute n = 3
<em><u>Fourth term:</u></em>
Substitute n = 4
Thus first four terms are 7, -13, 67, -253
0.0135135135135135135135135 etc
