The heights of a group of boys and girls at a local middle school are shown on the dot plots below. 2 dot plots with number line
1 answer:
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Answer:
1. x=±4
2. t=±9
3. r=±10
4. x=±12
5. s=±5
Step-by-step explanation:
1. x^2 = 16
Taking square root on both sides
x=±4
2. t^2=81
Taking square root on both sides
t=±9
3. r^2-100=0
r=±10
4. x²-144=0
x²=144
Taking square root on both sides
x=±12
5. 2s²=50
s=±5 ..
Given the equation of the parabola
The vertex of this parabola is placed at point (4,3).
If the equation of the parabola is then
The coordinates of the parabola focus are
Therefore, the focus is placed at point (4,3,75).
Answer: option D, 0.75 in. above the vertex
