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Art [367]
3 years ago
11

Discrete and continuous random variables

Mathematics
1 answer:
Iteru [2.4K]3 years ago
8 0
A continuous variable<span> is a </span>variable<span> whose value is obtained by measuring. A </span>random variable<span> is a</span>variable<span> whose value is a numerical outcome of a</span>random<span> phenomenon. A </span>discrete random variable<span> X has a countable number of possible values. Example: Let X represent the sum of two dice</span>
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Factorize this expression completely <br>using (a-b)² formula<br>3a²- 36a + 108​
Novosadov [1.4K]

Answer:

3a^2 - 36a + 108  = (\sqrt{3}a - 6\sqrt{3} )^2

Step-by-step explanation:

3a^2 = (\sqrt{3} a)^2\\108 = 9 \times 4 \times 3= 3^2 \times 2^2 \times 3 = (3\times2 \sqrt{3} )^2 = (6\sqrt{3})^2

so, a = \sqrt{3}  a \ , \ b = 6\sqrt{3} \\\\(a - b)^2 = a^2 -2ab + b^2\\\\-36a = -2ab\\\\-36a = -2 \times \sqrt{3} a \times 6\sqrt{3}

Therefore ,

3a^2 - 36a + 108 = (\sqrt{3}a )^2 - 2(\sqrt{3}a \times 6\sqrt{3} ) + (6\sqrt{3} )^2  = (\sqrt{3}a - 6\sqrt{3} )^2

6 0
3 years ago
Can someone help me please
tamaranim1 [39]

all shapes with 4 angles are 360 degrees

100+96= 196

360-196= 164

c+d=164

80+84=164

D is 84

C is 80

4 0
2 years ago
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Can someone explain this to me:)​
Ostrovityanka [42]

Answer:

B) m = 2 , b = -3

Step-by-step explanation:

b = y-intercept

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b = -3

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m = 2

7 0
2 years ago
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Find the volume of a cylinder. Round your answer to the nearest tenth. Do not add a comma.
natali 33 [55]

Answer:

Step-by-step explanation:

Base -- find the radius

radius -- 67.8 (135.6^2 /2)

h=11.2

Volume = 2385.59

2385.60

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2 years ago
Which expression can you simplify by combining like terms? 6d2+5cd?3dc+8 12c2?8d2c+3dc+4 7d2?3c2+6d?c 16c2+8cd+7c?8d
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Simplify combining like terms on 8d2c+3dc+47d2
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