Answer:
Step-by-step explanation:
If W is between X and Y, this means that W is the midpoint of X and Y. The expression XW+WY = XY is therefore true.
Given WX = 6n - 10, XY = 17, and WY = 3n, substituting the given functions into the formula;
6n-10+3n = 17
9n-10 = 17
add 10 to both sides
9n-10+10 = 17+10
9n = 27
divide both sides by 9
9n/9 = 27/9
n = 3
Since WX = 6n-10
substitute n = 3 into the function
WX = 6(3)-10
WX = 18-10
WX = 8
<em>Hence n = 3 and WX = 8</em>
Answer:
The common ratio of the first G.P. series will be the cube root of the common ratio of the second G.P. series.
Step-by-step explanation:
Let us assume that the first series has first term a and the common ratio r and is given by
a, ar, ar², ar³, ......... up to infinite terms
It is given that the terms of the second series are a cube of the corresponding terms of the first series.
So, the second series is up to infinite terms.
So, it is clear that the second series is a G.P. series with first term a³ and common ratio r³.
Therefore, the common ratio of the first G.P. series will be the cube root of the common ratio of the second G.P. series. (Answer)
