Answer:
Step-by-step explanation:
x is the geometric mean because it is a part of both the small triangle on the left (with base 81) and the whole triangle (with base 225). Setting up the geometric means formula:
and cross multiply to get
so
x = and
x = 135
Answer:
a) Function:Yes
b) Domain:
c) Range:
Step-by-step explanation:
The given graph passes vertical line test hence it is a function
The given function has x-intercepts at
We can therefore write this function in factored form as
There is a y-intercept at (0,-2)
The required function is
b) The domain refers to all values of x for which this function is defined.
The domain from the graph is because there are holes at the end of the graph.
c) The range is the value of y for which x is defined or the graph exists.
From the graph the range is
