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3 years ago

Fred has 204 books he donates 2/11 how many books did he donate

Mathematics

1 answer:

Tomtit [17]3 years ago

4 0

Answer:

37 books

Step-by-step explanation:

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Which point is an x interception of the quadratic function f(x)=(x-8)(x+9)

viva [34]

$f(x)=(x-x_1)(x-x_2)\\\\(x_1,\ 0),\ (x_2,\ 0)-x\ interceptions$

$\text{We have}\ f(x)=(x-8)(x+9)=(x-8)(x-(-9))\\\\\text{therefore your answer is:}\\\\(8,\ 0),\ (-9,\ 0)$

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3 years ago

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=HSSSSSSSSSSSSSS7H772E7H7777777777777777777777777777777777777777777777777777777

kari74 [83]

Answer:

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Step-by-step explanation:

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2 years ago

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A student answers a multiple-choice examination question that offers four possible answers. Suppose the probability that the stu

Salsk061 [2.6K]

Answer:

The value is $P(A | W) = 0.941$

Step-by-step explanation:

From the question we are told that

The probability that the student knows the answer to the question is $P(A) = 0.8$

The probability that that the student will guess is $P(G) = 0.2$

The probability that that the student get the correct answer given that the student guessed is $P(W /G) = 0.25$

Here W denotes that the student gets the correct answer

Generally it a certain fact that if the student knows the answer he would get it correctly

So the probability the the student got answer given that he knows it is

$P(W | A) = 1$

Generally from Bayes theorem we can mathematically evaluate the probability that the student knows the answer given that he got it correctly as follows

$P(A | W) = \frac{ P(A) * P(W | A )}{ P(A) * P(W | A) + P(G) * P(W| G)}$

=> $P(A | W) = \frac{ 0.8 * 1}{ 0.8 * 1+ 0.2 * 0.25}$

=> $P(A | W) = 0.941$

4 0

3 years ago

Can someone please help me with this?

mash [69]

Answer:

see explanation

Step-by-step explanation:

∠c = ∠ a = 47° ( vertical angles )

∠c and ∠b form a straight angle and are supplementary, thus

∠c + ∠b = 180, that is

47 + ∠b = 180 ( subtract 47 from both sides )

∠b = 133°

∠d = ∠b = 133° ( vertical angles )

That is a = c = 47° and b = d = 133°

The sum of the 4 angles = 133° + 47° + 47° + 133° = 360°

360° is the sum of the angles round a point , hence answer is correct

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3 years ago

Ayudaaaaaaaaaaaaaaaaaaa! Por favor

KiRa [710]

Answer:

Step-by-step explanation:

$diameter~d=\sqrt{9^2+5^2} =\sqrt{106} \\r=\frac{\sqrt{106} }{2} \\area=\pi (\frac{\sqrt{106} }{2} )^2=53\pi /2 \approx 83.21~square~units.$

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2 years ago