21 feet times 19 feet = 399 square feet
(21 + 21 + 19 + 19)/4 = 20
21+21+19+19=80
1.1053
There are 8 numbers. So you need to find the average of the 4th and 5th numbers when they are placed in order. So, average of 16 and 19 = 17.5
21 feet times 19 feet = 399 square feet
449
80/19= 4, 21
21-50
You can subtract 2 from 21 a total of 10 times. This is because each time you subtract 2, you are left with 19, and you can repeat the process until you reach 1. Mathematically, this can be represented as 21 - 2 = 19, 19 - 2 = 17, and so on until you reach 1.
19 with remainder 1.
Not an even number of times.
(21 + 21 + 19 + 19)/4 = 20
21+21+19+19=80
1.1053
There are 8 numbers. So you need to find the average of the 4th and 5th numbers when they are placed in order. So, average of 16 and 19 = 17.5
19/21 - 2/7 = 19/21 - 6/21 = 13/21