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3 years ago

What is 3.276 x 10^9 in standard form?

Mathematics

1 answer:

Delicious77 [7]3 years ago

7 0

The exponent is a positive number, so you move the decimal point, that many places to the right:

3.276 x 10^9 = 3,276,000,000

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第 5 个问题 a multiple choice exam has 10 questions. each question has 3 possible answers, of which one is correct. a student knows

tatuchka [14]

The chances that the student was merely guessing is 1/3.

Bayes Theorem determines the conditional probability of an event A given that event B has already occurred.

denoted by

$P(A/B)=\frac{P(A)*P(B/A)}{P(B)}$

let A be the event that the student knows the answer .

B be the event that the student does not knows the answer .

and

E be the event he gets answer correct .

According to the given question

$P(A)=\frac{4}{10} \\\\ P(B)=1-\frac{4}{10} =\frac{6}{10}$

Probability that the answer is correct ,given that he knows the answer is

$P(E/A)=1$

Probability that the answer is correct ,given that he guesses it is

$P(E/B)=\frac{1}{3}$ [as the MCQ has 3 options and only one is correct]

We need to find the probability that he guesses the answer given that it is correct.

Required probability $P(B/E)=\frac{P(B)*P(E/B)}{P(A)*P(E/A)+P(B)*P(E/B)}$

Substituting the values we get

$P(B/E)=\frac{\frac{6}{10} *\frac{1}{3} }{\frac{4}{10} *1+\frac{6}{10} *\frac{1}{3} }$

$=\frac{6}{30}*\frac{30}{18} \\ \\ =\frac{6}{18} \\ \\ =\frac{1}{3}$

Therefore , the chances that the student was merely guessing is 1/3.

Learn more about Probability here brainly.com/question/13140147

#SPJ4

8 0

1 year ago

Two bugs run along the rectangular starting from the same corner. The bug who runs east is two inches per second faster than the

german

Answer:

6 and 8

Step-by-step explanation:

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3 years ago

I really don’t get this one please i’ve been stuck forvever

expeople1 [14]

Answer:

ASA

Step-by-step explanation:

The Angle Side Angle Postulate (ASA) says that "triangles are congruent if any two angles and their included side are equal in the triangles. An included side is the side between two angles."

Hope this helps! :)

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1 year ago

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What is the volume of the pyramid? 8 cm 10cm 80m 120 cm 240 cm

blsea [12.9K]

Answer:

Volume = 80 cm3

Step-by-step explanation:

The formula for pyrimads is (LWH)/3

i know you need this quick so i made it short, good luck.

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3 years ago

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What is the measure of each interior angle of the regular polygon pictured below? If necessary, round to the nearest tenth.

sesenic [268]

Answer:

144

Step-by-step explanation:

The measure of each interior angle formula:

$\frac{180(n-2)}{n} \\\\\frac{180(10-2)}{10} \\\\\frac{180(8)}{10} \\\\\frac{1440}{10} \\\\144$

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3 years ago

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