a^2 + b^2 = c^2
9^2 + 7^2 = get the answer then find the square root of it
Answer:7 mins
Step-by-step explanation:
47 minus 19 equals 28 4 times 7 equals 8
Check the picture below.
so, hmmm notice, since i² = -1 and i⁴ = 1, whenever the exponent is only divisible by 2, the value will be -1, and whenever the exponent is divisible by 4, we end up with a +1, so every subsequent even exponent is simply cancelling the previous value, if we take that to the even value of 100, which has 50 pairs of those, we end up with, yeap, you guessed it, 0.
Answer:
Step-by-step explanation:
Given
Garden: 
One Bag: 
Requires
Determine the number of bags to cover the whole garden
This is calculated as thus;

Expand the numerator



Express 81 as 9²

Evaluate as difference of two squares


Hence, the number of bags is 
Answer:

Step-by-step explanation:
We need to find union of given sets
and 
We know by definition that union of two given sets say A and B is set C with all the unique and common values given in set A and B.
∴
∪
= 