3 years ago

What is y to the 2 power = 81

Mathematics

1 answer:

iren [92.7K]3 years ago

6 0

Answer:9

Step-by-step explanation:

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Four more than the quotient of 30 and a number

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$\dfrac{30}{x}+4$

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WRITE ALL OF THE NUMBERS THAT ROUND TO 50?

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45,46,47,48,49,50,51,52,53,54

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2 years ago

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In a race of 35 people, how many different ways can we have a 1st, 2nd and 3rd place finisher?

kumpel [21]

Answer:

39,270 ways.

Step-by-step explanation:

That is the number of permutations of 3 from 35.

35P3 = 35! / (35-3)!

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= 39270.

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2 years ago

Probability of someone either owning a dog or being male.<br>

andrey2020 [161]

Answer:

c. 60.278%

Step-by-step explanation:

There is a 27.778% probability that someone owns a dog.

There is a 45% probability that someone is a male.

However, these two are not mutually exclusive. 12.5% both own a dog and are male. If we simply add 27.778% and 45%, we'll be double counting the overlap. To avoid this, we subtract 12.5%.

27.778% + 45% − 12.5% = 60.278%

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3 years ago

I’m stuck on this question. any help would be greatly appreciated

Mademuasel [1]

Using the Pythagorean theorem we get:

$y^2+8^2=12^2.$

Simplifying the above result we get:

$y^2+64=144.$

Subtracting 64 from the above equation we get:

$\begin{gathered} y^2+64-64=144-64, \\ y^2=80. \end{gathered}$

Therefore:

$y=\sqrt{80}\approx8.9.$

Answer:

$y=8.9.$

4 0

1 year ago