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Mariulka [41]
3 years ago
12

PLEASE HELPPP!!

Mathematics
1 answer:
DanielleElmas [232]3 years ago
3 0

Answer:

-3 + 5 = 2

-3 + -2 = 1

-2 + -1 = -3

5 - -1 = 6

Step-by-step explanation:

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Elizabeth has a 15% discount coupon for a furniture store. She sees a new couch that she wants to buy. After the 15% discount wa
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To answer this since the discount is 15% the retail is 75% so you would put it in a ratio or part over whole so .75=2210 and 100%=x so then you would divide 2210 by .75 and you get 2946 but I’m not sure so...
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2 years ago
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
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ANTONII [103]
The answer is c. 0.8 L
7 0
3 years ago
Find the volume of the cylinder. Round your answer to the nearest tenth.
ludmilkaskok [199]

Answer:

1526.8 ft ^3

Step-by-step explanation:

the volume of a cylinder formula is V=π x r^2 x h

= pi x 9^2 x 6

= pi x 81 x 6

=1526.8 ft ^3

7 0
2 years ago
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What is the measure of Y? 4·9=36=36/4
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Answer:

Figure or Diagram Mandatory

GOOD LUCK FOR THE FUTURE! :)

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