Answer:
25x^2 -1
Step-by-step explanation:
If you multiply parentheses:
(5x*5x) + (5x*-1) + (1*5x) + (1*-1)
25x^2 - 5x + 5x -1
25x^2 -1
A simpler way is to memorize this formula
(Square1 - square2)= (sqrt of square1- sqrt of square2)*(sqrt of square1 + sqrt of sqaure2)
Answer:
Incorrect.
Step-by-step explanation:
1 toss could not change the frequency by such a large margin 0.47 ---> 0.55.
The number of heads obtained in 30 tosses = 30 * 0.47 = 14.
So if the next toss came up heads the relative frequency of heads would be
15/31 = 0.48.
Answer:
the perimeter is 50 inches squared
Step-by-step explanation:
if the length is 4 times that means the sides are 20 and 5
2.1 x 10^10/ 7 x 10^17
= 3 x 10^-8
hope this helps and have a great day :)
Answer:
2.5 eggs per chicken
Step-by-step explanation:
