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inna [77]
3 years ago
14

Please someone help me this is due in 10 minutes

Mathematics
1 answer:
loris [4]3 years ago
8 0

Answer:

m= 2ke/v^2

Step-by-step explanation:

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Christine has always been weak in mathematics. Based on her performance prior to the final exam in Calculus, there is a 51% chan
Charra [1.4K]

Answer:

a) 0.3270 = 32.70% probability that Christine fails the course

b) 0.3917 = 39.17% probability that she had found someone to help

Step-by-step explanation:

We have these following probabilities:

61% probability that Christine find a coach.

100 - 61 = 39% probability that Christine does not find a coach.

With a coach, a 21% probability of failing.

Without a coach, a 51% probability of failing.

a. What is the probability that Christine fails the course?

21% of 61%(finds a tutor) plus 51% of 39%(does not find a tutor). So

P = 0.21*0.61 + 0.51*0.39 = 0.327.

0.327 = 32.7% probability that Christine fails the course

b. Christine ends up failing the course. What is the probability that she had found someone to help?

This can be formulated by the Bayes formula:

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

In which P(B|A) is the probability of B happening given that A happened and P(A|B) is the probability of A happening given that B happened.

In this question.

P(B|A) is the probability of finding a tutor given that she failed.

P(B) is the probability of finding a tutor. So P(B) = 0.61.

P(A|B) is the probability of failing when finding a tutor. So P(A|B) = 0.21

P(A) is the probability of failing. So P(A) = 0.327.

So

P(B|A) = \frac{P(B)*P(A|B)}{P(A)} = \frac{0.61*0.21}{0.327} = 0.3917

0.3917 = 39.17% probability that she had found someone to help

4 0
3 years ago
a survey of 1,000 people was done bu the new York times. 80% of the people did not know the name of their representative in Cong
ss7ja [257]
The answer is 200. you would multiply 1000 by 80% giving you 800. 800 people didnt know the name so that leave 200 people did.
6 0
3 years ago
Read 2 more answers
What is the GFC40 and28
Butoxors [25]

Step-by-step explanation:

40 = 2 * 2 * 2 * 5

28 = 2* 2 * 7

So now

The GCF = 2 * 2 = 4

7 0
3 years ago
Read 2 more answers
Where is the point of discontinuity of y =<br> -4x+81/x-2<br> ?
Genrish500 [490]

Answer:

x = 2

Step-by-step explanation:

y = \frac{-4x+81}{x-2}

If the denominator is equal to zero , then y is undefined.

this discontinuity can be found by equating the denominator to zero and solving for x.

x - 2 = 0 ⇒ x = 2 is the point of discontinuity

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2 years ago
1.4+u/8=-11.4 solve for U
lara31 [8.8K]

1.4+\dfrac{u}{8}=-11.4\ \ \ \ |\text{subtract 1.4 from both sides}\\\\\dfrac{u}{8}=-12.8\ \ \ \ |\text{multiply both sides by 8}\\\\\boxed{u=-102.4}

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3 years ago
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