Answer:
x²+(1/x²) = 47
Step-by-step explanation:
by identity : (a+b)² = a²+b²+2ab
(x+1/x)²= x²+(1/x)²+2(x)(1/x)
(x+1/x)²= x²+(1/x²)+2....(1)
since : (x²+1)/x = 7
(x²/x) +(1/x) = 7
x + (1/x )= 7
put the value for : x +(1/x) in (1) :
49 = x²+(1/x²)+2
x²+(1/x²) = 47
Answer: THIRD OPTION.
Step-by-step explanation:
Since 
, then 
is:
In order to find which table represents when 
, you can follow these steps:
1. Substitute 
into the function 
:
2. Substitute 
into the function :
3. Substitute 
into the function :
Notice that those ouput values (for 
and ) matches with the table provided in the third option. That table represents when :
Y = mx + b
Where m is the slope and b is the y-intercept
As you can already see it passes through the origin so b (the y-intercept) is (x, 0)
And the slope were it’s rise/run so it goes up 2.5 units and to the right 1 unit so it’s 2.5/1 = 2.5
m = 2.5
Its the 3rd answer ok hope this helps
Wind energy is not a predictable/reliable source. If the wind slows down or is'nt present, you don't have any electricity being produced, while coal can be burned 24/7
