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ivolga24 [154]
3 years ago
10

A=2b^3-1 what's the value of b if a is 13

Mathematics
2 answers:
skelet666 [1.2K]3 years ago
5 0
\sf~A=2b^3-1

Plug in A = 13

\sf~13=2b^3-1

Add 1 to both sides:

\sf~14=2b^3

Divide 2 to both sides:

\sf~7=b^3

Find the cube root of both sides:

\sf~b=\sqrt[3]{7}

\sf~b\approx~1.91
vlabodo [156]3 years ago
3 0
A = 2b³ - 1
13 = 2b³ - 1
<u>+ 1         + 1</u>
<u>14</u> = <u>2b³
</u> 2       2<u>
</u> 7 = b³
∛(7) = b
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<h3>What is meant by probability?</h3>

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Given: Total number of probability - 52

Now, the first selected card is king and it is returned to the deck.

So it contains no effect on the second selection card.

Then, we have to estimate probability to obtain a king

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The complete question is:

The first card selected from a standard 52-card deck was a king. It isreturned to the deck, what is the probability that a king will be drawn on the second selection?

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D. 1/3 or 0.33

E. None of the above​

To learn more about probability refer to:

brainly.com/question/13604758

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