Answer:
(3x^2 - 1)(3x^2 + 1)(9x^4 + 1).
Step-by-step explanation:
Using the identity for the difference of 2 squares;
a^2 - b^2 = (a - b)(a + b)
we put a^2 = 81x^8 and b^2 = 1 giving
a = 9x^4 and b = 1, so:
81x^8 − 1 = (9x^4 - 1)(9x^4 + 1)
Applying the difference of 2 squares to 9x^4 - 1:
= (3x^2 - 1)(3x^2 + 1)(9x^4 + 1).
Answer:
4
Step-by-step explanation:
this is an equilateral triangle, meaning all sides and angles are the same
Answer:
18.8
Step-by-step explanation:
You just add the two lengths and then do pythagorean theory to get the length of the hypotenuse. Then you add them all together to get 18.8. Hope this helps.
Answer:
$4,320
Step-by-step explanation:
I equals PRT. I is the interest. P is the principal, amount borrowed. R is the rate, percent. T is the amount of time in years. Principal in this is 16,000. Rate is 9%, or 0.09. Time is 3 years. So 16,000 times 0.09 times 3 equals 4,320. That is the interest.
25 % = 18
50% = 36
75 % = 54
100 % = 72
25% x 72 = 18 therefore n = 72
125% x 72 = 90
Therefore 125% of n is 90
