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ollegr [7]
4 years ago
8

Michael puts 3 beads next to each other on a peice of string to make a bracelet. Each bead has a width of 5/6 inch. Which expres

sion and fraction both represent the total width of the three beads?
Mathematics
2 answers:
alexandr402 [8]4 years ago
7 0

Answer: 2 1/2 inches

Step-by-step explanation:

Michael puts 3 beads next to each other which are on a peice of string to make a bracelet. A bead has a width of 5/6 inch. Total width of the three beads will be the number of beads multiplied by the width of each bead. This will be:

= 3 × 5/6

= 15/6

= 2 1/2

The total width of the bead are 2 1/2 inches

xenn [34]4 years ago
6 0

Answer:

Expression: 3 x 5/6

fraction: 5/2

Step-by-step explanation:

Hi, to answer this question we simply have to multiply the number of beads (3) by the width of each bead (5/6 inch)

Mathematically speaking:

3 x 5/6 (this is the expression)

Solving the expression:

3 x 5/6= (3x5) / 6 = 15/6 = 5/2 inches (fraction)

Feel free to ask for more if needed or if you did not understand something.

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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.

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

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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

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