Answer:
The rate of change is 12ft/s
Step-by-step explanation:
Given

Required
Rate of change from when she jumps till 1/2s
The time she jumps is represented as: t = 0
So, calculate h(0)


At t = 1/2


Rate of change is calculated as:

In this case:

Where

So, we have:





<em>The rate of change is 12ft/s</em>
Answer:
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If wy is congruent to xy, then from w to y is equal to the distance between x and y. According to the figure, both distances are 3m-4 each. Therefore the perimeter is the sum of the three sides, namely:

Solving for m:




Finally:
<span>wx is the distance </span>