Pick 1 of 3 doors odds are 1 in 3, after pick an incorrect door is opened what are the odds if you change your pick that you wil
1 answer:
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Check the picture below.
notice, the focus point is at 4,5 whilst the directrix line is at y = -3, below the focus point, meaning the parabola is vertical and opening upwards.
keeping in mind that the vertex is "p" distance from either of these fellows, then the vertex is half-way between both of them, notice in the picture, the distance from y = 5 to y = -3 is 8 units, half that is 4 units, thus the vertex 4 units from the focus or 4 units from the directrix, that puts it at (4,1), whilst "p" is 4, since the parabola is opening upwards, is a positive 4 then.
notice, the focus point is at 4,5 whilst the directrix line is at y = -3, below the focus point, meaning the parabola is vertical and opening upwards.
keeping in mind that the vertex is "p" distance from either of these fellows, then the vertex is half-way between both of them, notice in the picture, the distance from y = 5 to y = -3 is 8 units, half that is 4 units, thus the vertex 4 units from the focus or 4 units from the directrix, that puts it at (4,1), whilst "p" is 4, since the parabola is opening upwards, is a positive 4 then.
Answer:
It takes 20 minutes for each dog
Step-by-step explanation:
she wants to spend an equal amount of time with each dog she has 145 minutes to play with all 7 dogs
It takes 145 minutes to play with 7 dogs
for 7 dogs it takes 145 minutes
To find the time taken for 1 dog , divide 145 by 7
It takes 20 minutes for each dog