1/3 cup cocoa,1/2 cup flour,1 teaspoon vanilla it makes 48 cookies. change recipe to make 24 cookies

5tbs + 1tsp cocoa, 8 tbs flour, 1/2 tsp vanilla

Step-by-step explanation:

Since the Original recipe makes 48 cookies, to make 24 cookies, divide everything by 2 since 48 divided by 2 is 24.

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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