Let f(x) = 5x + 12. Find f−1(x).

1 answer:

7 0

Replace,

x = y

Or

x = f(x)

then us stay:

x = 5y + 12

Isolate 5y

5y = x - 12

Dividing both the sides by 5

y = x/5 - 12/5

Then, replace y = f^-(x)

f^-(x) = x/5 - 12/5

Hope this helps

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select the irrational number? A)√9 B)√12 C)√16 D)√20 E)√25 (there should be more than one answer)

GenaCL600 [577]

The answers are:
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[B]: "√12 " ; AND:
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[D]: "√20" .
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Note: "Irrational numbers" have decimals that are: 1) non-terminating; AND: 2) non-repeating.
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Consider the answer choices given; and consider the given information that there "should be no more than one answer.
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Choice A) "√9" = 3 . Rule out this choice.
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Choice C) "√16" = 4 . Rule out this choice.
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Choice E) "√25" = 5. Rule out this choice.
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We are left with 2 (two) remaining answer choices:
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[B]: "√12" = 3.4641016151377546

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These two answer choices should the correct answers.

6 0

2 years ago

Solve for U -8u = - 16/3

lorasvet [3.4K]

Answer:

u = 2/3

Step-by-step explanation:

Simply divide both sides by -8:

u = (-16/3)/-8

If you don't have a calc, use KCF:

u = (-16/3)(-1/8)

u = 16/24