By counting the same set in two ways, prove the following identity:
n ∑ k = 0 ( k m ) ( n k ) = ( n m ) 2 n − m . ∑k=0n(km)(nk)=(nm)2n−m. notes: for there is no meaning to the word "towers" other than what is given: ∅ ⊆ a ⊆ b ⊆ { 1 , 2 , … , n } .

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

answer: x=1

step-by-step explanation:

f(x) = g(x)

x - 2 = -1

x = 1

therefore the graph should be a line showing x=1 which is vertical and passes on 1

hope it !

they can either have 0,1, or infinite solutions

step-by-step explanation: