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3 years ago

A crate is shaped like a rectangular prism. The crate is 1.2 feet wide, 3 feet long, and 4.5

Mathematics

1 answer:

hjlf3 years ago

4 0

Answer:

1..3.3..3

Step-by-step explanation:

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What is the scintific notation of 4,497,000,000

Diano4ka-milaya [45]

4,497,000,000 = 4.497 x 10^9

4 0

2 years ago

Read 2 more answers

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

9 months ago

10. Solve the equation 1 + x + x² + x

MissTica

Answer:

x^2 + 2x + 1

Step-by-step explanation:

1. collect the like terms.

2. use the commutative property to reorder the terms.

5 0

3 years ago

How many solutions are there to the following system of equations? 3x-9y=0 -x+3y=-3

Cloud [144]

Answer:

no solution

Step-by-step explanation:

if you graph both equation the lines are parallel.

parallel = no solution

overlap = infinite solution

intersect = one solution

4 0

3 years ago

8.2.38 Find the value of x. * * (Round to the nearest tenth as needed.)

Basile [38]

Answer:

Step-by-step explanation:

To the nearest tenth 8.238

=8.2 to the nearest tenth

6 0

3 years ago