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Dafna1 [17]
3 years ago
12

The product of a number and 4 increased by 16 is -2

Mathematics
1 answer:
Art [367]3 years ago
3 0
The answer is -4.5

To solve these types of problems it's best to work backwards.
-2 - 16 = -18
4 x (n) = -18
n = -18/4
n = -4.5

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Answer:

Step-by-step explanation:

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From the first equation x = (18 - 3y)/4

So substituting in the area equation:

A = [ (18 - 3y)/4]^2 + √3y^2/4

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Now for maximum / minimum area the derivative = 0 so we have

A' = 1/16 * 2(18 - 3y) * -3 + 1/4 * 2√3 y = 0

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-27/4 + 9y/8 + √3y /2 = 0

-54 + 9y + 4√3y = 0

y = 54 / 15.93

= 3.39 metres

So x = (18-3(3.39) / 4 = 1.96.

This is a minimum value for x.

So the total length of wire the square  for minimum  total area is 4 * 1.96

= 7.84 m

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3 0
3 years ago
What’s the hypotenuse?
Karolina [17]

Answer:

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Step-by-step explanation:

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3 years ago
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<u>Solve x:</u>

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5 0
3 years ago
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elixir [45]
12^2+x^2=15^2
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7 0
2 years ago
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Pavel [41]

Answer:

The fourth option is the correct answer

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6 0
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