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... of n people chosen k at a time. C(n,k) = n! / (k! (n-

**k**)!)**C**(10,3) = 10! / (3! 7!) = 120 I have trouble remembering the formula, so...4 Answers · Science & Mathematics · 07/10/2019

... general formula for exactly k successes is: P(X =

**k**) =**C**(n,k) * p^k * q^k n : number of trials (e.g. 5 flips) k...1 Answers · Science & Mathematics · 14/09/2019

...n - k)! k!] That would mean: C(n, n - k) = n! / [(n - (n-k))! (n -

**k**)!]**C**(n, n - k) = n! / [k! (n -**k**)!]**C**(n, n - k) = n! / [(n - k)! k!] Hence...6 Answers · Science & Mathematics · 12/09/2019

...atm is the atmospheric concentration, we would model this as: dC(t)/dt = -

**k***(**C**(t) - C_atm) where k is some positive rate constant. Note that the...2 Answers · Science & Mathematics · 06/08/2019

... that it's not true. Maybe you mistyped things?

**k****c**(k) 4c(k-1) 0 0 1 1 0 2 3 4 3 7 12 4 15 28 5 31 601 Answers · Science & Mathematics · 25/07/2019

...k±a) length of major axis = 2a co-vertices (h±b,k) foci (h,

**k**±**c**), c² = a²-b² Apply your given information...4 Answers · Science & Mathematics · 29/05/2019

...k) vertices (h,k±a) co-vertices (h±b,k) foci (h,

**k**±**c**), c² = a²-b² (y-10)²/10² + (x-5)²...4 Answers · Science & Mathematics · 21/05/2019

x^2 - kx + 4 = 0 apply the discriminant formula a = 1 , b = -

**k**,**c**= 4 b^2 - 4ac = 0 (-k)^2 - 4(1)(4) = 0 k^2 - 16 = 0 k^2 = 16 k = √(16) k = 4 answer// x^2 - 4x + 4 = 0 (x - 2)(x - 2) = 0 x = 28 Answers · Science & Mathematics · 19/05/2019

Rules (−k)^2/a^2 - (x-h)^2/b^2 = 1 , c = √(a^2+b^2) vertices (h , k+a) and (h , k-a) Foci (h ,

**k**+**c**) and (h ,**k**-**c**) the asymptotes y - k = ±(a/b)(x-h)1 Answers · Science & Mathematics · 13/05/2019

14i - 4j -

**k**2 Answers · Science & Mathematics · 02/05/2019

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