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3 years ago

Please help me with these three questions! They are quick and easy. I will mark brainiest!

Mathematics

1 answer:

natta225 [31]3 years ago

6 0

Answer:

i don't know a counterexample for the first one

A counterexample for the second one is a leaf bug

A counterexample for the third one is a trapezoid, rectangle, rhombus

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Joseph buys a bag of 60 pieces of taffy. In the bag, there are 6 cinnamon pieces, 18 raspberry pieces, 18 key lime pieces, and t

Lady bird [3.3K]

The answer is D. Since it would be 18/60 witch simplify into 3/10 and that in decimal form is 0.3

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3 years ago

What is 3/8 -1/8 plz help me !!!!!

Nuetrik [128]

2/8 is the answer because if you do 3-1 it would equal 2 and then you would put 2 over eight. You can even simplify it to 1/4 because 2 and 8 can both be divided by 2.

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3 years ago

(x4 − 9x + 5x7) + (5x − 10 + 3x4 − 2x2)

Svetlanka [38]

Answer:

(x^4 - 9·x + 5·x^7) + (5·x - 10 + 3·x^4 - 2·x^2)

x^4 - 9·x + 5·x^7 + 5·x - 10 + 3·x^4 - 2·x^2

5·x^7 + x^4 + 3·x^4 - 2·x^2 - 9·x + 5·x - 10

5·x^7 + 4·x^4 - 2·x^2 - 4·x - 10

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3 years ago

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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3 years ago

Connor was given a box of asstorted chocolates for his birthday. Each night, Connor treated himself to some chocolates. There we

swat32

Answer: 18- 3t

Step-by-step explanation:

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3 years ago