Draw the circle ( x − 1 ) 2 + ( y + 2 ) 2 = 9
1 answer:
The required circle will have a radius of 3 units and centre at (1, -2)
<h3>Equation of a circle</h3>The standard equation of a circle is expressed as shown;
(x-a)^2+(y-b)^2 = r^2
where
(a, b) is the centre of the circle
r is the radius of the circle
Given the equation of the circle below;
(x − 1)^2 + (y + 2)^2 = 9
(x − 1)^2 + (y + 2)^2 = 3^2
Find the centre and radius
centre = (1, -2)
radius = 3
This shows that the required circle will have a radius of 3 units and centre at (1, -2)
Learn more on equation of a circle here: brainly.com/question/14150470
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Answer:
a) 0.06 = 6% probability that a person has both type O blood and the Rh- factor.
b) 0.94 = 94% probability that a person does NOT have both type O blood and the Rh- factor.
Step-by-step explanation:
I am going to solve this question treating these events as Venn probabilities.
I am going to say that:
Event A: Person has type A blood.
Event B: Person has Rh- factor.
43% of people have type O blood
This means that
15% of people have Rh- factor
This means that
52% of people have type O or Rh- factor.
This means that
a. Find the probability that a person has both type O blood and the Rh- factor.
This is
With what we have
0.06 = 6% probability that a person has both type O blood and the Rh- factor.
b. Find the probability that a person does NOT have both type O blood and the Rh- factor.
1 - 0.06 = 0.94
0.94 = 94% probability that a person does NOT have both type O blood and the Rh- factor.