Answer:
16m^2-40mn+25n^2
Step-by-step explanation:
This is using (a-b)^2= a^2-2ab+b^2
Now if you replace a with 4m and b with 5n you will get 16m^2-40mn+25n^2
Range I think I may be wrong ?
Answer:
900,000.
Step-by-step explanation:
If the number is a multiple of 10 it must end in zero.
The first digit can be any one of 0-9 except 3 - that is one of 9 digits.
All other positions (2nd to 6th) can be any one of 0 to 9 (10 digits).
So the number of possible telephone numbers is:
9*10*10*10*10*10
= 900,000.
Answer:
Coterminal angle of 60° (π / 3): 420°, 780°, -300°, -660°
Step-by-step explanation:
Answer:
The greatest common factor of 15 and 31 is 1.
Step-by-step explanation:
What are the factors of 15?
1, 15 and 3, 5
What are the factors of 31?
31 and 1
We can see that 31 and 15 only share on common factor, which is 1.
1 is the greatest and the only factor!
