Ken Helena created equipment expressions for two different expressions only one of them had the correct answer ken said that 4x+6x/2 was equivalent to 5x Helena said that 6x+4/2 was equivalent to 3x+4

step-by-step explanation:

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answer: i don't understand it

step-by-step explanation: sorry

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

if she was to only spend a dollar she can get 1lb

step-by-step explanation: