To win at LOTTO in one state, one must correctly select 6 numbers from a collection of 65 numbers (1 through 65). The order in which the selection is made does not matter. How many different selections
are possible?

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step-by-step explanation:

your answer is d 2,500

step-by-step explanation:

the f

last graph i believe

step-by-step explanation:

worked it out i believe

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15