1 1/2. Divide 12 into 18. You have 6 /12 left over. Reduce to 1/2. You have 1 1/2
Answer:
The explicit formula for the geometric sequence is .
Step-by-step explanation:
By definition of geometric sequence, we should use the following expression:
, (1)
Where:
- First term.
- Geometric rate.
- Position of the element within the series.
If we know that and , then the explicit formula for the geometric sequence is:
The explicit formula for the geometric sequence is .
Shobo's age = x years
His mother's age = 6 times of Shobo's age
= 6x years
Five years from now
________________
Shobo's age = ( x + 5 ) years
According to the problem given,
x + 5 = one by third of his mother's
present age
x + 5 = 6x / 3
x + 5 = 2x
5 = 2x - x
5 = x
Therefore ,
Shobo's present age = x = 5 years
His mother's age = 6x
= 6 × 5
= 30 years