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Korvikt [17]
3 years ago
7

Based on a poll 68% of internet users are more careful about personal information when using a public Wifi hotspot. What is the

probability that among four randomly selected Internet users, at least one us more careful about personal information when using a public Wifi hotspot? How is the result affected by the additional information that the survey subjects volunteered to respond? The probability that at least one of them is careful about personal information is.
Mathematics
1 answer:
Stella [2.4K]3 years ago
4 0

Answer:

.98951424

Step-by-step explanation:

You find "1 - P(No ONE is careful)"

This is equivalent to "1 - (.32^4)," which simplifies to "1 - .01048576," which is .98951424

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10. simplify the rational expression by rationalizing the denominator.( 1 point ) 4√150/√189x
ddd [48]
Rationalizing the denominator, simply means "getting rid of that pesky root at the bottom", and we do so by simply multiplying it by something to take it out, of course, we multiply the bottom, we have to also multiply the top,

\bf \cfrac{4\sqrt{150}}{\sqrt{189x}}\cdot \cfrac{\sqrt{189x}}{\sqrt{189x}}\implies \cfrac{4\sqrt{150}\sqrt{189x}}{(\sqrt{189x})^2}\implies \cfrac{4\sqrt{(150)({189x})}}{189x}

\bf \cfrac{4\sqrt{28350x}}{189x}\qquad 
\begin{cases}
28350=2\cdot 3\cdot 3\cdot 3\cdot 3\cdot 5\cdot 5\cdot 7\\
\qquad 2\cdot 3^2\cdot 3^2\cdot 5^2\cdot 7\\
\qquad 2\cdot (3^2)^2\cdot 5^2\cdot 7\\
\qquad 2\cdot (3^2\cdot 5)^2\cdot 7\\
\qquad 2\cdot (45)^2\cdot 7\\
\qquad 14\cdot 45^2
\end{cases}\implies \cfrac{4\sqrt{14\cdot 45^2}}{189x}
\\\\\\
\cfrac{4\cdot 45\sqrt{14}}{189}\implies \cfrac{180\sqrt{14}}{189x}\implies \cfrac{20\sqrt{14}}{21x}
4 0
3 years ago
Solve the equation for x. x + 3 /6 = x - 6/ 3 A) 9 B) 12 C) 15 D) 18
Strike441 [17]

Answer:

a

Step-by-step explanation:

7 0
4 years ago
Brainliest for best answer thank for helping
zaharov [31]

Answer:

A

Step-by-step explanation:

Find the slope using rise/run

This gets you -5/4

Find the y intercept, which is at (0, 3)

This means the equation will be:

y = -5/4x + 3

8 0
3 years ago
What is the surface area of 5, 8, and 3
Rashid [163]

Answer:

158

Step-by-step explanation:

5*8=40

8*3=24

3*5=15

Each of these measurements gets added twice, becasue there are 6 faces on a rectangular prism.

40 + 40 + 24 + 24 + 15 + 15 = 158

5 0
3 years ago
Read 2 more answers
A person purchased 10 items to donate to a school. They bought backpacks that cost $25.75 each and notebooks that cost $4.25 eac
krek1111 [17]

Answer:

D

Step-by-step explanation:

6 0
3 years ago
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