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LuckyWell [14K]
2 years ago
9

SEE QUESTION IN IMAGE

Mathematics
1 answer:
Inessa05 [86]2 years ago
3 0

Answer:

<h3>48</h3>

<u>Probability of dying on the birthday is:</u>

  • 1/365

<u>Probability of not dying on the birthday is: </u>

  • 1 - 1/365 = 364/365
<h3>49</h3>

Probability of blue-eyed boy is:

  • 1/2*1/4 = 1/8
<h3>50</h3>

Total frequencies = 10

Frequency of 7 and greater is 4: 7, 8, 9, 10

<u>Required probability:</u>

  • 4/10 = 2/5
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Enter the indicated element.
Ymorist [56]

a_{1,3} = 9

Step-by-step explanation:

The elements of matrices are represented in the form

a_{r,c}

Here r is the row number and c is the column number.

Given matrix is:

A = \left[\begin{array}{ccc}3&6&9\\2&4&8\end{array}\right]

The elements of matrix will be represented by a_{r,c}

We have to find a_{1,3}

Which means that the first row and third column.

The first row is: 3   6    9 and the element in third column is: 9

So,

a_{1,3} = 9

Keywords: Matrices, Elements

Learn more about matrices at:

  • brainly.com/question/10541435
  • brainly.com/question/10666510

#LearnwithBrainly

6 0
2 years ago
The Revenue for the week is $2000, and labor cost consists of two workers earning $8 per hour who work 40 hours each, what is la
kkurt [141]

8*40 = 320 * 2 = $640 for the 2 workers

640/2000 = 0.32

labor cost is 32% of the revenue

8 0
3 years ago
The angles of a quadrilateral are 140, 80, 60, and 80<br> What type of quadrilateral could it be?
My name is Ann [436]
Your answer is a trapezium 
5 0
3 years ago
Read 2 more answers
The wind blew away 24 of your muffins. That was 3/4 of them! How many are left?
forsale [732]
Set up a proportion:

3/4/24 = 1/x

Cross multiply:

3/4x = 24

Divide 3/4 to both sides or multiply by its reciprocal, 4/3:

x = 24 * 4/3

x = 96/3

x = 32

So you had a total of 32 muffins, now subtract this from the amount that blew away to find out how many you have left:

32 - 24 = 8

So you have 8 muffins left.
3 0
3 years ago
A 30 gram sample of a substance that's used to sterilize surgical instruments has a k-value of 0.1235. Find the substances half
jok3333 [9.3K]

Answer : The substances half life in days is, 5.6 days.

Step-by-step explanation :

Half life : It is defined as the amount of time taken by a radioactive material to decay to half of its original value.

All radioactive decays follow first order kinetics.

The relation between the half-life and rate constant is:

k=\frac{0.693}{t_{1/2}}

where,

k = rate constant = 0.1235 per days

t_{1/2} = half-life

Now put all the given values in the above formula, we get:

0.1235\text {days}^{-1}=\frac{0.693}{t_{1/2}}

t_{1/2}=5.6\text{ days}

Thus, the substances half life in days is, 5.6 days.

5 0
3 years ago
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