3 years ago

Suppose that four times the square of a number equals 20 times that number. What is the number?

Mathematics

1 answer:

Mrac [35]3 years ago

3 0

The answer is 5.
You can divide 20 by 4 and get 5

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katrin2010 [14]

As you know, to get the inverse of any expression, we start off by switching the variables about and then solving for "y",

$\bf \stackrel{f(x)}{y}=\cfrac{1}{2}x+4\qquad \qquad \stackrel{inverse}{\underline{x}=\cfrac{1}{2}\underline{y}+4}\implies x-4=\cfrac{1}{2}y
\\\\\\
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\\\\\\
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3 years ago

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kykrilka [37]

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2 years ago

your total savings varies inversely with the amount spent on Bill's. if your savings is $300 when your cost of Bill's are $65. W

tatyana61 [14]

Let S and B be savings and bills respectively. Then,
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S = k/B Where k = Constant.
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Then,
300 = k/65
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Therefore,
For B = $145,

S= 19500/145 = $134.48

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3 years ago

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<h2>46</h2><h2 /><h2 /><h2>Please leave a rating if this helped! Have a great day!</h2>

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago