PLEASE HELP 99 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!111
2 answers:
You might be interested in
Answer:
The answer is 4536.
Step-by-step explanation:
Each number is to consist of four different digits(no repetition) from 0 to 9, except that the first digit cannot be 0.
Total numerals from 0 to 9 = 10
For 1st place you have 9 options for 1st digit (0 is not selected here).
For the 2nd place you again have 9 numbers (0 is available but 1 digit less from 10 as it is already selected in first place) so, you get 9c1 ways = 9
For the 3rd place you have 8c1 ways = 8
For the 4th place you have 7c1 ways = 7
Total number of identification numbers are :
Therefore, there are 4536 different identification numbers.
Answer:
44%
Step-by-step explanation:
the area of a rectangle = Length × Breadth
original area of james pit = 20×20=400in²
new size = 20 + 4 =24 inches
new area = 24 × 24= 576in²
increase in area = 576 - 400 = 176
percentage increase = × 100
= × 100
=0.44 × 100
=44%
percentage increase in area is 44%