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Evgesh-ka [11]
3 years ago
8

Math thanks ik u like math

Mathematics
2 answers:
Shkiper50 [21]3 years ago
7 0

Answer:

775/25

Step-by-step explanation:

Mariulka [41]3 years ago
6 0
Oh man maths hard ;( ...
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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

5 0
3 years ago
what is the unit rate of 3 pizzas for $19.99 and round the answer to nearest hundredth ? PLZzz HELP ASAP!!!!​
kipiarov [429]

Divide 19.99 / 3

Get 6.663

Round to 6.66

Unit rate for 3 pizzas at 19.99 is 6.66

4 0
3 years ago
what is the y-intercept of the equation of the line that is perpendicular to the line y = 3/5x 10 and passes through the point (
bazaltina [42]
Perpendiculare means the slopes multiply to -1

y=3/5x+10
slope is 3/5
3/5 times what is -1
-5/3 is answer

slope of perpenduclar is-5/3 find y int
y=-5/3+b
point given is (15,-5)
x=15
y=-5

-5=-5/3(15)+b
-5=-25+b
add 25 to both sides
20=b

the yintercept is y=20 or the oint (0,20)
6 0
3 years ago
How to find the probability of exactly one event happening?
Vlad [161]


probability \: of \: an \: event \: happening =  \: number \: of \: ways \: it \: can \: happen \div total \: number \: of \: outcomes
6 0
3 years ago
The ____ axis is vertical.
4vir4ik [10]

Answer:

Y

Step-by-step explanation:

The y-axis is the the secondary or vertical axis of a system of coordinates, points along which have a value of zero for all other coordinates.

6 0
3 years ago
Read 2 more answers
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