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3 years ago

What are the solutions to the equation x² = 256?

2 answers:

8 0

x² = 256
x = ±√256
x = ±16

 the solutions are x = -16 and x = 16

Artyom0805 [142]3 years ago

6 0

X = 16
x = - 16

You could do it this way
x^2 - 256 = 0
(x - 16)(x + 16) = 0
x - 16 = 0
x = 16

x + 16 = 0
x = - 16

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Step-by-step explanation:

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3 years ago

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Determine whether the value is a discrete random variable, continuous random variable, or not a random variable. a. The number

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Answer:

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Step-by-step explanation:

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3 years ago

Mr. Smith built a rectangular-shaped sandbox for his children, measuring 4 feet by 4 feet by 6 inches. Sand has a density of app

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Answer:

To completely fill the sandbox will cost $56

Step-by-step explanation:

First, we calculate volume of the rectangular-shaped sandbox:

$V=long*with*height\\V=4feet*4feet*0.5feet\\V=8cubicfoot$

We know that density of sand is 100 pounds per cubic foot. Then, to fill the sand box that has a volume of 8 cubic foot, we calculate by rule 3:

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To calculate the cost:

1 bag ..................$3.50

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To completely fill the sandbox will cost $56

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3 years ago

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3 years ago

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Answer:

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3 years ago