Lazarteorvileviz
Answered

arithmetic mean between x+3 and 3x+ -3​

Sagot :

Cleezzyyjoshviz

Step-by-step explanation:

Consider a=(x+2) & c=(4x+5).

Let a,b & c be in A.P where b is the arithmetic mean of a and c.

Clearly,b=(a+c)/2=(x+2+4x+5)/2=(5x+7)/2.

Equating b=(5x+7)/2 & b=(3x+2)[as given],we get,

(3x+2)=(5x+7)/2

(6x+4)=(5x+7)

◆x=3.