Answer:
The vertex of the parabola is at equal distance between focus and the directrix. If F is the focus of the parabola, V is the vertex and D is the intersection point of the directrix and the axis of symmetry, then V is the midpoint of the line segment ¯FD
Step-by-step explanation:
answer 3rd
Answer:
67
Step-by-step explanation:
0.71=71%.
2/100+2/100=4/100/4%
So we can subtract 71-4=67.
That tells us that the missing number is 67. Add it all up and you will get 0.71 or 71%
Answer:
and 
Step-by-step explanation:
Hope this helps!
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Answer:
1. Student #2, 81%
2. Student #2, 85%
Step-by-step explanation:
1. Student #1:
(86 + 59 + 85 + 87 + 69) ÷ 5
= 386 ÷ 5
= 77.2
This student scored an average of 77.2%.
Student #2:
(81 + 96 + 79 + 64 + 85) ÷ 5
= 405 ÷ 5
= 81
This student scored an average of 81%.
Therefore, Student #2 has the better average.
2. Student #1:
(75 + 96 + 63) ÷ 3
= 234 ÷ 3
= 78
This student scored an average of 78%.
Student #2:
(83 + 72 + 100) ÷ 3
= 255 ÷ 3
= 85
This student scored an average of 85%.
Therefore, Student #2 has the better average.
