let 〈xn〉n=1...∞ be a sequence satisfying xn+1=xn-xn-1 for each n belongs to N. Prove that ∀ n ∈ N, xn+6=xn by induction

let 〈xn〉n=1...∞ be a sequence satisfying xn+1=xn-xn-1 for each n belongs to N. Prove that ∀ n ∈ N, xn+6=xn by induction

What is the value of sin A?

(cot2 theta + 1) (tan theta)

let G=(V,E) be a graph where V={A⊆N5||A|=2} and E={{A,B}⊆V|A∩B=ø} sketch this graph and find its size

Twenty percent of the shoes in a factory are black. One shoe is chosen and replaced. A second shoe is chosen and replaced. Then a third shoe is chosen. What is the probability that none of the shoes...

A club has 30 members under the age of 30 and 40 members who are 30 or older. In how many ways can a slate of officers be chosen if the President and atleast one other officer must be at least 30...

Pleas helm me with this. Its a practice problem, and I do not know how to do it. Thanks!

Please help! I do not know how to do this practice problem. My professor told us to try it for fun. But, he never went over it in class. And now im curious

A club has 30 members under the age of 30 and 40 members who are 30 or older. In how many ways can a slate of officers be chosen if the President and atleast one other officer must be at least 30...

Please help! its a combinations question. Thank you!

Pleas help! Not sure how to do this

I need help with this story problem for my daughter. Her dad and I can't figure it out.

I need the exact anwser for this question

1. (sec x-1)(sec x+1) = tan2x 2. cot 2θ = cot2 θ-1 -------------...

Find the height of a square pyramid that has a volume of 873.18m^3 and a length of 12.6m.

Determine the integer values of n for which n^2-18n+45 is a prime number.

Need to know an equation

Castor bought 6 3/4 small cakes to 26 students. Did castor have enough for each student to get 1/4 each of cake?

a) Factorise 3x^2+19x+20. b) Hence, Factorise 3(y-2)+19(y-2)+20

The directions for lemonade say to put 2 cups of the liquid concentrate into 1 gallon of water. If Olivia only wants to make 1 pint of lemonade, how many fluid ounces of concentrate should she use...