Im pretty sure its the commutative property.
Answer:
811
Step-by-step explanation:
The place values of digits in base-3 are all powers of 3. The numbers 1, 3, 4, 9 written in base-3 are ...
1
10
11
100
You will recognize these as successive numbers in base 2. Then the 81st number of interest is written in base-3 the way 81 is written in base-2:
101 0001
It will be the sum 3^6 +3^4 +3^0 = 729 +81 +1 = 811
The 81st number is 811.
Answer for x is 12.688 rounded to 12.69
A) The shaded region is that portion of the rectangle that is not in the circle. You need the formulas for the area of a rectangle and a circle.
Area of rectangle = length*width
Area of circle = (π/4)*diameter²
b) The figure shows the width of the rectangle is 14 ft, the same as the diameter of the circle. The length of the rectangle is shows as 21 ft. The shaded area is the difference ...
Shaded Area = Area of rectangle - Area of circle
Shaded Area = (21 ft)*(14 ft) - (π/4)*(14 ft)²
Evaluating this expression, we have
Shaded Area ≈ 294 ft² - 153.9 ft² = 140.1 ft²
The answer is 64. Length times width times height.