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Andrew [12]
3 years ago
6

Please answer this question

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
8 0
The area of the base (six triangles with a base 15m and a height 7.5√3m):

A_B=6\cdot\dfrac{1}{2}\cdot15\cdot7.5\sqrt3\approx585\ m^2

The area of side walls (six triangles with a base 15m and a height 12m)

A_W=6\cdot\dfrac{1}{2}\cdot15\cdot12=540\ m^2

The surface area:

A_B+A_W=585+540=1,125\ m^2



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In a certain community, 36 percent of the families own a dog and 22 percent of the families that own a dog also own a cat. In ad
zysi [14]

Answer:  a) 0.0792   b) 0.264

Step-by-step explanation:

Let Event D = Families own a dog .

Event C = families own a cat .

Given : Probability that families own a dog : P(D)=0.36

Probability that families own a dog also own a cat : P(C|D)=0.22

Probability that families own a cat : P(C)= 0.30

a) Formula to find conditional probability :

P(B|A)=\dfrac{P(A\cap B)}{P(A)}\\\\\Rightarrow P(A\cap B)=P(B|A)\times P(A)   (1)

Similarly ,

P(C\cap D)=P(C|D)\times P(D)\\\\=0.22\times0.36=0.0792

Hence, the probability that a randomly selected family owns both a dog and a cat : 0.0792

b) Again, using (2)

P(D|C)=\dfrac{P(C\cap D)}{P(C)}\\\\=\dfrac{0.0792}{0.30}=0.264

Hence, the conditional probability that a randomly selected family owns a dog given that it owns a cat = 0.264

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alexira [117]

Answer:

Doesnt Have a matrix its singular I believe, But I can really help on that

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What is the answer 5x² – 33x - 14 = 0​
KatRina [158]

Answer:

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Step-by-step explanation:

5x² – 33x - 14 = 0​

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so the value of X is -2/5,7

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Can help me how<br>Macam mana... ​
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Step-by-step explanation:

i)

2(x+2)=7

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ii)3x + y =8 , y=x

3x + x = 8

4x = 8

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2 years ago
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