Answer:
Option B. 
Step-by-step explanation:
we know that
The area of a circle is equal to
we have
substitute
Remember that
radians subtends the complete circle of area 
so
by proportion
Find the area of the related sector for a central angle of 
radians
Let
x------> the area of the related sector
<h3>The given expression as single exponent is:</h3>
<em><u>Solution:</u></em>
<em><u>Given expression is:</u></em>
In exponents,
When the base is same, exponents can be added
Which means,
Therefore,
Thus the given expression as single exponent is:
A. C. D. E. F.
These all have variability.
Answer : (0,3) U (3, ∞)
We need to find the interval(s) over which the function is decreasing
We look at the intervals of x where the graph is decreasing
Decreasing interval of the graph is the part where the graph goes down
We look at the part where the graph changes direction
In the middle inverted U shaped graph , the graph changes direction and start decreasing at x=0
the graph is decreasing till x=3
so first decreasing interval is x=0 to 3. we write it as (0,3)
After x=3 the graph starts decreasing and it goes to infinity
So the second decreasing interval is 3 to infinity . We write it as (3, ∞)
Now combine both intervals by a 'U' union
(0,3) U (3, ∞)
Well if you add 14 and 21 you get 35. with 35 you can have 7 groups of 5 but if they have to be equal with the number of boys and girls in each group it would still be 7. two boys in each group with three girls in each group.
