Answer:
1. x=11/4
Step-by-step explanation:

u should x 20 then u will get





Sides that two side is equal so
5x+10=40
5x=30
X=6
Answer:
a = 64
Step-by-step explanation:
The geometric mean of 2 numbers a and b is
, then
= 16
( square both sides )
28a = (16
)² = 1792 ( divide both sides by 28 )
a = 64