<h3>
Answer: Top row, third option (far right)</h3>
Explanation:
The notation 
means "floor of x". Whatever decimal value x is, we just ignore the decimal portion and just focus on the integer part. We round down to the nearest whole number. We always round down.
For something like x = 2.5 or x = 2.7, the value of will be 2. It doesn't matter that 2.7 is closer to 3 than it is to 2. The interval 
will be entirely on the x axis since we are taking the result of the flooring operation and subtracting off 2. Notice how x = 3 is not included. This is because x = 3 leads to y = 1 instead of y = 0. So we have an open hole at the end of the interval. The same goes for any other piece as well.
Answer:
Step-by-step explanation: the area of the circle is A=r%5E2%2Api
if x is the radius of the large circle, then r=x and the area of the larger circle is
A=x%5E2%2Api
and if x is the diameter of the small circle,then r=x%2F2 and the area of the smaller circle is
A=%28x%2F2%29%5E2%2Api->A=%28x%5E2%2F4%29%2Api
Multiply 15 with 12
15 x 12 = 180 (total area, including the hole).
Find the area of the hole. Subtract 2 fives from 12.
2(5) = 10
12 - 10 = 2
The side measurement is 8
8 x 2 = 16m²
Subtract 16 from 180
180 - 16 = 164m²
164 m² should be your answer
hope this helps
3√20 / √5 Multiply both sides by √5/√5
3√20(√5) / 5 Multiply the radicals. Remember that √a * √b = √(ab)
3√100/5
3*10/ 5
30 / 5 = 6
Answer is 6
