(2k+3)(k-1)
Use the distribute property
(2k)(k)+(2k)(-1)+(3)(k)+(3)(-1)
= 12k²-2k+3k-3
= 2k²+k-3
The answer is A
Good night
Answer:
I believe your answer is 10! :)
All you have to do to calculate the mean average is add the values of the numbers together and then divide that sum by the number of numbers :D.
So in this case:
766 + 878 = 1644
1644 / 2 = 822
The average of these two numbers is 822.
That means it could be + - 3 degrees.
52 + 3 = 55
52 - 3 = 49
The temperature range is 49 to 55