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The correct answer is image 3. Clock
Explanation:
An object exhibits rotational symmetry if it can be rotated and still look the same or coincide with the original object. For example, if you rotate a circle this will be symmetrical or will look the same at any rotation. According to this, the clock or third object does not exhibit rotational symmetry because due to details such as the clock hands or the bells if you rotate the image in any direction and at any degree, the image will not coincide with the original one, and therefore there is not symmetry when the object is rotated.
Answer
a) 0.035
b) 0.14
Step-by-step explanation:
Let J be the event that Joe has the disease.
Let The be the event that Joe's test is positive.
Pr(J) = 1/2%
= 0.5/100 = 0.005
Pr(J') = 99.5%
= 0.995
Pr(T|J) = 98%
= 0.98 since 2% if the time if a person having the disease is omitted ("false negative ")
Pr(T|J') = 3% = 0.03 since there are 3 false positives
a( Pr(T) = us the probability that Joe tests positive
Pr(T) = Pr(T|J)* P(J) + Pr(T|J')*Pr(J')
= (0.98*0.005) + (0.03*0.995)
= 0.00049 + 0.02985
= 0.03475
= 0.035
b) Pr( J|T) = Pr(JnT) / Pr(T)
= (Pr(T|J)*Pr(J)) / Pr(T)
= (0.005*0.98) / 0.035
= 0.0049/0.035
= 0.14
Answer:
(-3) + (-7)
Step-by-step explanation:
Follow me please.......
Consider the angles are = 60,2x,3x
As we know the sum of the interior angle of a triangle is 180
60+2x+3x= 180
5x= 120
x= 24°
Angles are 2x= 2(24)= 48°
and 3x= 72°
<em>The measure of smaller angle is 48°</em>