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3 years ago

13

aiko is biulding a tower out of paper she starts by making 2 congruent circular bases she then makes 1 curved surface sor the bo

dy of the tower what 3 dimensional figure does aiko biuld

1 answer:

sammy [17]3 years ago

6 0

cylinder

Step-by-step explanation:

the basses is top and bottom so if there circular on top and bottom and curved surface for the body its a cylinder

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Of the 12 people attending a lecture, 2 have brown eyes. What is the probability that a randomly selected person will have brown

MrRissso [65]

Answer:

1/6

Step-by-step explanation:

Probability = number of ways it could happen / total number of outcomes

Since there are 2 people with brown eyes, so the numerator is 2.

Since there are 12 people in total, the denominator is 12.

Probability = 2/12 = 1/6

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3 years ago

What are the approximate solutions of 7x^2 4x-9=0??

BlackZzzverrR [31]

No solution 7x square and -3 cant equal you a positive or a negative answer

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3 years ago

In answering on a multiple choice test, a student either know the answer or guesses. Let p be the probability that the students

LenaWriter [7]

Answer:

$P(A_{1}|B ) =\frac{mp}{1+p(m-1)}$

Step-by-step explanation:

For mutually exclusive events as A1, A2, A3, etc, Bayes' theorem states:

$P(A|B)= \frac{P(B|A)P(A)}{P(B)}$

P(A|B) is a conditional probability: the likelihood of event A occurring given that B is true.

P(B|A) is a conditional probability: the likelihood of event B occurring given that A is true.

P(A) is the probability that A occurs

P(B) is the probability that B occurs

For this problem:

A1 is the probability that the student knows the answer

A2 is the probability that the student guesses the answer

B is the probability that the student answer correctly

$P(A_{1})=p \\P(A_{2})=1-p \\P(B|A_{1})=1 \\P(B|A_{2})=\frac{1}{m} \\P(B)= P(A_{1})P(B|A_{1}) + P(A_{2})P(B|A_{2})= p+\frac{1-p}{m} \\$

P(B|A₁) means the probability that the answer is correct when he knew the answer

P(B|A₂) means the probability that the answer is correct when he guessed the answer

P(A₁|B) means the probability that he knew the answer when the answer was correct

Replacing everything in the Bayes' theorem you get:

$P(A_{1}|B)= \frac{P(B|A_{1})P(A_{1})}{P(B)}=\frac{(1)(p)}{p+\frac{1-p}{m}} =\frac{mp}{mp+1-p} =\frac{mp}{1+p(m-1)}$

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2 years ago

If p q and q r, which statement must be true?

makkiz [27]

Then p = r must be true

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2 years ago

What is the constant variation of y=5x

loris [4]

Answer:

It's 5.

Step-by-step explanation:

Because a constant is a number next to the variable.

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3 years ago

Read 2 more answers