Find an equation of a parabola with a vertex at the origin of directrix Y = -2.5
1 answer:
Answer:
Step-by-step explanation:
Since the directrix is , it means the axis of the parabola is parallel to the y-axis.
Also, the vertex is at the origin so the parabola opens upwards.
The equation of a parabola with these properties is of the form , where
,that is the distance between the vertex and the directrix.
.
Since the parabola opens upwards, we choose .
The equation of the parabola now becomes,
Or
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Complete Question
The histogram from this question is shown on the first uploaded image
Answer:
The first quartile is
The median is
The third quartile is
The mean is
Step-by-step explanation:
From the question we are told that
The total number of girls is n = 74
Generally the median is mathematically represented as
So
=>
=>
From the histogram fall under 2 fruits per day
Generally the first quartile is mathematically represented as
=>
=>
From the histogram girl fall under 1 fruit per day
Generally the third quartile is mathematically represented as
=>
=>
From the histogram fall under 4 fruits per day
Generally from the histogram table the frequency [number of subjects (girls) ] and the servings of fruit per day can be represented as
Total
x(servings per day ) 0 1 2 3 4 5 6 7 8
f (number of subjects ) 15 11 15 11 8 5 3 3 3
xf 0 11 30 33 32 25 18 21 24
Generally the mean is mathematically represented as
=>
=>
