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Alex Ar [27]
4 years ago
10

Can someone answer this question please answer it correctly and please show work please help me if it’s correct I will mark you

brainliest

Mathematics
2 answers:
AVprozaik [17]4 years ago
7 0

Answer:

3/7

Step-by-step explanation:

There are 39 swimmers. To find the probability we must put 39 over the total amount of students on each winter sports team.  50 + 39 + 1 + 1 =  91.

Now solving we get 39/91  simplified as 3/7 as our final answer and the probability that the athlete is a swimmer.

DENIUS [597]4 years ago
6 0

Answer:

3/7

Step-by-step explanation:

<u>Step 1:  Find the total amount of people</u>

50 + 39 + 1 + 1

91

<u>Step 2:  Find the probability of a swimming team</u>

swimming / all

(39/13) / (91/13)

3/7

Answer:  3/7

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Quadrilateral the word that describe the equal share of 4 equal sides
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4 years ago
A rectangle hale card has a length of 3/10 and a width of 4/5 find the perimeter
postnew [5]

Answer:

22/10 or 2 and 1/5

Step-by-step explanation:

To find the perimeter, add all sides together. Since it's a rectangle, the other sides are the same measurement as the ones given. Add 3/10, 3/10, 4/5, and 4/5 together. To do this, find a common denominator. The lowest common denominator is 10 so multiply the 4/5 by 2/2 to get the denominator to be 10. Now, add 3/10, 3/10, 8/10, and 8/10. It adds up to 22/10 but if you don't want an improper fraction, simplify it to 2 and 1/5.

4 0
4 years ago
Suppose the height of an 18 year old boy is normally distributed with mean 187cm fifteen percent of 18 year old boys have height
BARSIC [14]

Answer:

the probability that two 18 year old boys chosen at random will have heights greater than 185cm is 0.403

Step-by-step explanation:

P( x > 193) = 0.15

= 1- p(x less than or equal 193)

= 1 -p( z < (x- u) /sigma)

= 1- p( z< (193 - 187)/ sigma)

= 1- p( z< 6/ sigma)

P(z< 6/sigma) = 1 - 0.15

P(z < 6/sigma)= 0.85

6/sigma =1.036

Sigma= 6/1.036

Sigma= 5.79

P( x> 185) = 1- p( x< 185)

= 1- p (z < (185- 187)/5.79)

= 1- p( z< -0.345)

= 1- 0.365

= 0.635

P (x> 185) = 0.635 × 0.635

=0.403

3 0
4 years ago
Isaiah ran 100 meters on a 200 meter track. He started running on the 19 meter mark. On what Mark did he finish his run
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Answer:

119

Step-by-step explanation:

19+100=119

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x is equal to 5 and y is equal to 29


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3 years ago
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