Step-by-step explanation:
{0,1,2,3,4,5,6,7,8,9}--set of numbers from 0 to 9
{2,3,5,7}---set of prime numbers from 0 tp 9
there are 10 numbers in the first set and 4 numbers in the second set.
4/9 is the probability that the digit he selects is a prime number
Hope that helps :)
Subtract magazine from total:
25 -5 = 20
Divide by number of erasers:
20/4 = 5
Each eraser cost $5
Answer:
39 ft = 468 in
39 ft = 13 yd
As the room is a rectangle, to find the area you simply multiply the length and width together.
L x W = A
As in the question stated you have the area and length:
12.5 x W = 131
To find the width you can simply divide the area by the length:
131 ÷ 12.5 = 10.48 ≅ 10.5 = 10