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Natalka [10]
2 years ago
13

Question 7

Mathematics
1 answer:
sleet_krkn [62]2 years ago
3 0

Answer:

Area = 60 cm^2

Step-by-step explanation:

Remark

It's a rectangle. So the diagonal divides the rectangle into 2 congruent right angle triangles. You can use Pythagoreas

Givens

c = 13 cm

a = 12

b = ?

Formula

a^2 + b^2 = c^2

Area = L * w

Solution

12^2 + b^2 = 13^2

144 + b^2 = 169                Subtract 144 from both sides

b^2 = 169 - 144

b^2 = 25                           Take the square root of both sides.

sqrt(b^2) = sqrt(25)

b = 5

Find the area of the rectangle

Area = L * w

L = 12

w = 5

Area = 12 * 5

Area = 60

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A corporation must appoint a president, chief executive officer, chief operating officer and chief financial officer. It also ap
soldi70 [24.7K]

Answer:

a) 11,880

b) 495

c) 0.00202

Step-by-step explanation:

Given:

The complete question is as follows:

"A corporation must appoint a  president, chief executive officer  (CEO), chief operating officer  (COO), and chief financial officer  (CFO). It must also appoint a planning committee with four different members. There are 12

qualified candidates and officers can also serve on the committee.

Find:

a. How many different ways can the officers be appointed?

Solution:

  - The total number of qualified candidates = 12

 - The officers need to be appointed = 4                                                                                                                        (President, Chief Executive Officer, Chief Operating Officer, Chief Financial officer)

  - Here count does count so we use permutations:

  - The number of different ways of appointing Officers = 12P4 = 11,880

b. How many different ways can the committee be appointed?

   The total number of qualified candidates = 12

  The total number of planning committee members = 4  

  Here order does not count as all the planning committee members:

  The number of different ways of appointing Officers = 12C4 = 495

   

c. What is the probability of randomly selecting the committee members and getting the four youngest of the qualified candidates?

  P ( 4 youngest officers ) =  Selecting 4 youngest / Selecting a committee

                                           = 1 / 495

                                           = 0.00202

6 0
3 years ago
Select the correct answer.
laiz [17]
I Think The answer is c I hope it helps My friend Message Me if I’m wrong and I’ll change My answer and fix it for you
6 0
3 years ago
Read 2 more answers
A cylinder has a volume of 320 pi cu. in. and a height of 5". Find the radius of the cylinder.
crimeas [40]

Answer:

The radius of cylinder is 8 inches.

Step-by-step explanation:

We have given,

Volume of cylinder = 320π   cubic inches

Height of cylinder = 5 inches

We know, Formula for volume of cylinder as : V =πr²h

where r is radius of cylinder and h is the height of cylinder.

So, We can plug values for V and h to get radius of cylinder.

i.e  V = πr²h

320π = πr²* 5

Solving for r.

We get,

320 = r² * 5

320/5 = r²

64 = r²

or r = ±8 , Since radius of cylinder can not a negative number so we neglect -8.

Hence the radius of cylinder is 8 inches.


3 0
3 years ago
A number to the 12th power divided by the same number to the 9th power equals 216. What is the number?
Annette [7]

Answer:

The given such number is 6.

Step-by-step explanation:

Let the given such number  = m

Now, according to the question, the given expression is:

\frac{(m^{12}) }{(m^{9}) }   =  216

By the LAW OF EXPONENTS:

\frac{x^a}{x^b}  = x^{(a-b)}

⇒Here \frac{m^{12}}{m^9}  = m^{(12-9)}  = m^{(3)}

or, the given expression becomes m^3 =  216\\\implies m = \sqrt[3]{216}  = 6

or, m  = 6

Hence, the given such number is 6.

8 0
3 years ago
3. You drove 75 miles/hour for 8 hours. How far did you travel?
sasho [114]

Answer:

800

Step-by-step explanation: 75 x 8

4 0
3 years ago
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