Answer:
What expressions are equivalent to 20
Step-by-step explanation:
since you didn't .show a link this is my guess, i guess.
4x5=20
Answer:
28
Step-by-step explanation:
because it's value increases by 28 every month
Change x+y=5 to y=5-x
x+5-x=-3
0=-8
The answer is no solution. :)
There's 9 choices for the first digit and 4 choices for the last digit. The number of choices for the 2nd and 3rd digits is 90 if 2 numbers are different. or 100 if duplicates are allowed.
If duplicates are allowed the answer is 9 * 100 * 4 = 3600 possible numbers.