Answer:
x = 4
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² + 1² = 9²
x² + 1 = 81 ( subtract 1 from both sides )
x² = 80 ( take square root of both sides )
x = 
= 
= 
× = 4
<span>263.894 is the answer</span>
Answer:
The right answer is "
".
Step-by-step explanation:
The given values are:
As we know,
95% confidence for 
will be:
= 
The lower bound will be:
= 
= 
The upper bound will be:
= 
= 
Thus the right answer is ""
Problem
evaluate the function
f(-x) = f(x)
plug in the points (2,1) then solve
Solution
For this case we can conclude that:
f(2) =1
So then we satisfy that:
f(-2) =1
