Answer:
= 3n + 1
Step-by-step explanation:
Th number of squares in each figure is
4, 7, 10, ....
The terms have a common difference, that is
7 - 4 = 10 - 7 = 3
The number of squares in the n th figure is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 4 and d = 3, thus
= 4 + 3(n - 1) = 4 + 3n - 3 = 3n + 1
Answer:
Step-by-step explanation:
We require to create 2 equations with the repeating digits after the decimal point. Then by subtracting them we eliminate the repeating part.
let x = 2.1616.... → (1)) ← multiply both sides by 100
100x = 216.1616..... → (2)
Subtract (1) from (2)
99x = 214 ( divide both sides by 99 )
x =