<em>4</em><em>0</em><em>+</em><em>40</em><em>+</em><em>40</em>
<em>6.80</em><em>÷</em><em>2</em>
<em>and</em><em> </em><em>if</em><em> </em><em>you</em><em> </em><em>do</em><em> </em><em>this</em><em> </em>
<em>you</em><em> </em><em>will</em><em> </em><em>end</em><em> </em><em>up</em><em> </em>
<em>getting</em><em> </em><em>your</em><em> </em><em>answers</em><em> </em>
Answer:
25.61 feet
Step-by-step explanation:
First, we can draw a picture (see attached picture). With the wall representing the rightmost line, and the ground representing the bottom line, the ladder (the hypotenuse) forms a 80 degree angle with the ground and the wall and ground form a 90 degree angle.
Without solving for other angles, we know one angle and the hypotenuse, and want to find the opposite side of the angle.
One formula that encompasses this is sin(x) = opposite/hypotenuse, with x being 80 degrees and the hypotenuse being 26 feet. We thus have
sin(80°) = opposite / 26 feet
multiply both sides by 26 feet
sin(80°) * 26 feet = opposite
= 25.61 feet as the height of the wall the ladder reaches
Answer:
just substitute x for 5 and then solve and then substitute x for -1 and solve and subtract the two answers you get
Answers:

![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
Step-by-step explanation:
<h2>8.</h2>

Dividing both sides by n · R:

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Multiplying both sides by 1000:

Dividing both sides by tc:

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Answer:
Average rate of change 
Step-by-step explanation:
Given interval are from 
Also,
Average rate of change![=\frac{f(b)-f(a)}{b-a}\ for\ given\ interval\ [a,b]](https://tex.z-dn.net/?f=%3D%5Cfrac%7Bf%28b%29-f%28a%29%7D%7Bb-a%7D%5C%20for%5C%20given%5C%20interval%5C%20%5Ba%2Cb%5D)
Here given intervals are 
Plugging these value in formula, we get.
Average rate of change