Answer:
Part A: The survey is random and fair. Part B: It was random because the cafeteria is where they are going to change and 10th student entering isn't biased.
Step-by-step explanation:
Answer:
I nt kw,nodo i t aiselelp you
Step-by-step explanation:
Answer:
![Length=19 inches\\\\Width=5 inches](https://tex.z-dn.net/?f=Length%3D19%20inches%5C%5C%5C%5CWidth%3D5%20inches)
Step-by-step explanation:
Let the width of the rectangle be 'w' inches
length of the rectangle= (2w+9) inches
Perimeter of the rectangle= 48 inches
Perimeter of a rectangle= 2(Length+Width)
![48=2((2w+9)+w)\\\\48=2(2w+9+w)\\\\48=2(3w+9)\\\\48/2=3w+9\\\\24=3w+9\\\\3w=24-9\\\\3w=15\\\\w=15/3\\\\w=5 inches](https://tex.z-dn.net/?f=48%3D2%28%282w%2B9%29%2Bw%29%5C%5C%5C%5C48%3D2%282w%2B9%2Bw%29%5C%5C%5C%5C48%3D2%283w%2B9%29%5C%5C%5C%5C48%2F2%3D3w%2B9%5C%5C%5C%5C24%3D3w%2B9%5C%5C%5C%5C3w%3D24-9%5C%5C%5C%5C3w%3D15%5C%5C%5C%5Cw%3D15%2F3%5C%5C%5C%5Cw%3D5%20inches)
![Width= 5 inches](https://tex.z-dn.net/?f=Width%3D%205%20inches)
![Length=(2w+9)=2(5)+9=19 inches](https://tex.z-dn.net/?f=Length%3D%282w%2B9%29%3D2%285%29%2B9%3D19%20inches)
![Length=19 inches\\\\Width=5 inches](https://tex.z-dn.net/?f=Length%3D19%20inches%5C%5C%5C%5CWidth%3D5%20inches)
You have to separate the circle part from the rectangle part The rectangle Is figure 10 time 20 Equals 30 ft² The Circle part is 10×3.14=31.4÷2=15.7 You divide by 2 because it is half of a circle