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sukhopar [10]
3 years ago
5

The heights of the students in a class are​ (in inches) 60​, 72​, 56​, 57​, 74​, 61​, 64​, 63​, 66​, 56​, 72​, 72​, 71​, 74​, 61

​, 68​, 65​, 72​, 67​, and 66. What is the experimental probability that a student chosen at random is 5 feet 6 inches​ tall?
Mathematics
1 answer:
Alexandra [31]3 years ago
4 0

Answer:

There is a 11% chance that someone 5 foot 6 inches would get chosen.

Step-by-step explanation:

5*12=60

60+6=66

there are 19 numbers

66/19=.105263

you would then round up the tenths place due to the value of the thousandths place being above 5.

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sammy [17]

Answer:

  1. 4
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Step-by-step explanation:

4\div \:2+5-3\\=2+5-3\\=4\\\\3+5\times \:8\div \:2\\=3+20\\=23

7 0
3 years ago
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Find a+b,2a+3b,IaI, and Ia-bI. a[5, -12], b=[-3, -6]
DENIUS [597]

Answer: 1) 2\hat{i}-18\hat{j} 2) \hat{i}-6\hat{j} 3) 13, 4) 10.

Step-by-step explanation:

Since we have given that

\vec{a}=5\hat{i}-12\hat{j}\\\\and\\\\\vec{b}=-3\hat{i}-6\hat{j}

So, we need to find :

1) a + b is given by

5\hat{i}-12\hat{j}-3\hat{i}-6\hat{j}\\\\=2\hat{i}-18\hat{j}

2) 2a+3b is given by

2(5\hat{i}-12\hat{j})+3(-3\hat{i}-6\hat{j})\\\\=10\hat{i}-24\hat{j}-9\hat{i}+18\hat{j}\\\\=\hat{i}-6\hat{j}

3) |a| is given by

\sqrt{5^2+(-12)^2}\\\\=\sqrt{25+144}\\\\=\sqrt{169}\\\\=13

4) |a-b| is given by

\sqrt{(5+3)^2+(-12+6)^2}\\\\=\sqrt{8^2+6^2}\\\\=\sqrt{64+36}\\\\=\sqrt{100}\\\\=10

Hence, 1) 2\hat{i}-18\hat{j} 2) \hat{i}-6\hat{j} 3) 13, 4) 10.

6 0
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Answer:

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Step-by-step explanation:

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Darina [25.2K]

Answer:

18

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48, 56, 68, 72, 72, 78, 78, 80, 82, 84, 88, 88, 88, 90, 94, 98, 100
agasfer [191]

Answer:

52

Step-by-step explanation:

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100 - 48 = 52

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