What is the value of a? 5 units units units 7 units
2 answers:
Answer:
is the answer.
Step-by-step explanation:
In the given triangle YWZ
WZ² = YW² + YZ²
c² = 4² + 3² = 16 + 9 = 25
c = 5
In the ΔXYW
b² = 4² + a²-----(1)
In the right angle triangle WXZ
(a + 3)² = b² + c²
a² + 9 + 6a = b²+ c²
By putting value of b² from equation 1.
a² + 9 + 6a = 16 + a² + 25
6a + 9 = 41
6a = 41 - 9
6a = 32
a = 32/6 = 16/3
So is the answer.
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Answer:
I don't know if your question is multiple choice or not but here's a close estimate to what it should be.
y =
Step-by-step explanation:
Obviously at a drop of 0 height there would be 0 rebound height so your y-intercept has to be 0.
As for the slope of the line I used the point at 2.5 and 3.
Here are the coordinates (2.5, 1.25) and (3, 1.625)
Find the average rate of change as you see below
1.625 - 1.25 = .375
3 - 2.5 = .5
.375 / .5 = .75 or 3x/4
The points aren't exactly on the line and the graph isn't 100% linear so obviously the equation is not 100% precise. The slope should very close to 0.75 or 3/4.
let's notice something, the parabola is a vertical one, so the squared variable is the x, and is opening downwards, meaning the x² will have a negative coefficient.
the distance from the vertex to the directrix/focus is the amount of "p" units, let's see in the graph, the distance from the vertex to the directrix is 2, and since the parabola is opening downwards, "p" is a negative 2, p = -2. The vertex is of course at (0, 2).