Answer:
x = 20
Step-by-step explanation:
given f(x) =
, we have to solve
= 4
Square both sides
(
)² = 4²
x - 4 = 16 ( add 4 to both sides )
x = 20
As a check
=
= 4 ← correct
Answer:
the total area is 155 + 23.75 +23.75 = 202.5
Step-by-step explanation:
rectangle = 15.5 times 10 =155
tryangle 1 = 4.75 times 10 divided by 2=23.75
tryangle 2 = 23.75
K + 8 > 24
k > 16
(16, infinity)
Just do for example on number 38 you will do 6.8/1000= 0.0068 which is the answer