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3 years ago

If y=-16 when x=4 find x when y=48

Mathematics

1 answer:

MatroZZZ [7]3 years ago

8 0

Answer:

x= -12

Step-by-step explanation:

Assuming this is a direct variation

y = kx

When y = -16 x =4 we can find k

-16 = k*4

Divide each side by 4

-16/4 = 4k/4

-4 =k

y = -4k

Y = 48

48 = -4x

Divide each side by -4

48/-4 = -4x/-4

-12 =x

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3 years ago

a fuel mixture consists of 3 parts oil and 11 parts gasoline. the oil costs $0.75 per liter, and the gasoline costs $1.60 per li

kupik [55]

Answer:

Total selling price= $663.82

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Step-by-step explanation:

Giving the following information:

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3 years ago

What is the solution to |x + 2| < 1?

Katyanochek1 [597]

Answer:

-3 <x <-1

Step-by-step explanation:

|x + 2| < 1

There are two solutions, one positive and one negative ( remember to flip the inequality for the negative)

x+2 <1 and x+2 > -1

Subtract 2 from each side

x+2-2 < 1-2 and x+2-2 > -1-2

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2 years ago

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Step-by-step explanation:

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