Which number is irrational? A.-4 B.2/9 C.sqrt of 11 D.8.26... (repeating 6 only)
2 answers:
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Answer:
H. 1/9.
Step-by-step explanation:
The area of a circle is calculated by solving for π.
The smallest circle has an area of π = π * 1 = π.
The middle ring will then have an area of π - π = π * 4 - π = 4π - π = 3π.
The largest ring will then have an area of π - π
= 9π - 4π = 5π.
5π + 3π + π = 9π
So, the probability of hitting the innermost circle will be π / 9π = 1 / 9.
Your answer is H. 1/9.
Hope this helps!
The domain of a(x) is all of R. The domain of b is the range where 
. We can calculate the composition boa by changing in the expression for b, every x with a(x). Hence, boa(x)=
=
. Again for a function with a root to be defined, we need that the expression under the square root has to be positive. Hence, 3x-3
0.Thus, the set where this holds is 
. This is also the domain of the function boa(x).