Answer:
82.5% Americans owned a TV also owned a DVD player .
Step-by-step explanation:
Formula
As given
Of the 114.2 million Americans who owned a TV, 94.2 million also owned a DVD player.
Here
Part value = 94.2 million
Total value = 114.2 million
Putting all the values in the formula
Percentage = 82.5 %
Therefore 82.5% Americans owned a TV also owned a DVD player .
Answer:
If or , there is only one solution to the given quadratic equation.
Step-by-step explanation:
Given a second order polynomial expressed by the following equation:
This polynomial has roots such that , given by the following formulas:
The signal of determines how many real roots an equation has:
: Two real and different solutions
: One real solution
: No real solutions
In this problem, we have the following second order polynomial:
.
This means that
It has one solution if
We can simplify by 8
The solution is:
or
So, if or , there is only one solution to the given quadratic equation.
Answer:
x=3
Step-by-step explanation:
A. population in 1975 ........................