Answer:
(4)/(\sqrt(2))
Step-by-step explanation:
<h3>━━━━━━❃━━━━━━</h3>
<h3>Part one :</h3>
As it is given :
Present age of mom : Present age of son = 6 : 1
Therefore let :
<h3>Part two :</h3>
Ages after 10 year :
<h3>Part three :</h3>
The ages after 10 years are given in rational of 8 : 3.
Which means :
Mom's age after 10 years : Son's age after 10 years = 8 :3.
Now :


So :


























<h3>Part four :</h3>
We know :






<h3>━━━━━━❃━━━━━━</h3>
And all we are done ! ㋛
<h3>~

༄</h3>
Answer:
x = 4
Step-by-step explanation:
2 + 3(3x - 6) = 5(x - 3) + 15
Expand the parenthesis:
2 + 9x - 18 = 5x - 15 + 15
Simplify:
9x - 16 = 5x
Subtract 5x from both sides:
4x - 16 = 0
Add 16 to both sides:
4x = 16
Divide both sides by 4:
x = 4
The explicit formula for calculating the sum is

The sum of the nth term of a sequence is expressed as;

a is the first term
d is the common difference
n is the number of terms
For the sequence 0 + 1 + 2 + 3 +...

Similarly for the sequence:
1 + 2+ 3 + 4+...

Taking the product of the sum to get the explicit formula for calculating the sum

Learn more here: brainly.com/question/24547297