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Nitella [24]
3 years ago
12

I need help with this​

Mathematics
1 answer:
amid [387]3 years ago
4 0

Answer:

they're all wrong, it should be [3,4,7,9]

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Lena [83]

Answer:

i think the answer is b

Step-by-step explanation:

6 0
4 years ago
Anyone know this answer Help ASAP
Anton [14]

Answer:

The right answer is A (x=2,y=-1)

6 0
3 years ago
I need to.find out what the blanks are please comment
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First blank: 8
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3 years ago
A group of friends wants to go to the amusement park. They have no more than $390 to spend on parking and admission. Parking is
stepladder [879]

Answer:

10 people

Step-by-step explanation:

First, I subtracted $16.75 from $390. I got an answer of $373.25. Next, I divided $373.25 by 34 people. The answer then rounded out to 10 People. So in conclusion 10 people can go to the amusment park.

7 0
3 years ago
Bad gums may mean a bad heart. Researchers discovered that 81% of people who have suffered a heart attack has periodontal diseas
IgorC [24]

Answer:

0.405 or 40.5%

Step-by-step explanation:

Let event A=having a periodontal disease

event B=having a heart attack

we are given

P(A)=P(having a periodontal disease)=0.30

P(B)=P(having a heart attack)=0.15

P(A/B)=P(have a periodontal disease/have a heart attack)=0.81

P(B/A)=P(have a heart attack/have a periodontal disease)=?

P(A/B)=P(A∩B)/P(B)

P(A∩B)=P(B)*P(A/B)=0.15*0.81=0.1215

P(B/A)=P(A∩B)/P(A)=0.1215/0.3=0.405

There is 40.5% probability that if someone has periodontal disease will have a heart attack.

7 0
3 years ago
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