Answer:
$166.42.
Step-by-step explanation:
We have been given that the price of the cell phone is expected to increase by 165% in September 2015. The current price of a cell phone is $62.80.
The price of cell phone in September 2015 will be $62.80 plus 165% of $62.80.
![\text{The predicted cost of a cell phone in September 2015}=\$62.80+(\frac{165}{100}*\$62.80)](https://tex.z-dn.net/?f=%5Ctext%7BThe%20predicted%20cost%20of%20a%20cell%20phone%20in%20September%202015%7D%3D%5C%2462.80%2B%28%5Cfrac%7B165%7D%7B100%7D%2A%5C%2462.80%29)
![\text{The predicted cost of a cell phone in September 2015}=\$62.80+(1.65*\$62.80)](https://tex.z-dn.net/?f=%5Ctext%7BThe%20predicted%20cost%20of%20a%20cell%20phone%20in%20September%202015%7D%3D%5C%2462.80%2B%281.65%2A%5C%2462.80%29)
![\text{The predicted cost of a cell phone in September 2015}=\$62.80+\$103.62](https://tex.z-dn.net/?f=%5Ctext%7BThe%20predicted%20cost%20of%20a%20cell%20phone%20in%20September%202015%7D%3D%5C%2462.80%2B%5C%24103.62)
![\text{The predicted cost of a cell phone in September 2015}=\$166.42](https://tex.z-dn.net/?f=%5Ctext%7BThe%20predicted%20cost%20of%20a%20cell%20phone%20in%20September%202015%7D%3D%5C%24166.42)
Therefore, the predicted cost of a cell phone in September 2015 will be $166.42.
You have not provided a diagram, therefore, I cannot provide you with the exact solution.
However, I will try to help you with the procedures on how to get the area of trapezoid and you can apply on the diagram you have.
Now, area of trapezoid can be calculated using the following rule:
area of trapezoid =
![\frac{b1 + b2}{2} * h](https://tex.z-dn.net/?f=%20%5Cfrac%7Bb1%20%2B%20b2%7D%7B2%7D%20%2A%20h)
where:
b1 is the length of the first base
b2 is the length of the second base
h is the height of the trapezoid
The bases are the two parallel sides in the trapezoid
To better illustrate this, consider the attached diagram.
We have:
b1 = 5 m
b2 = 8 m
h is the perpendicular height = 4 m
Area =
![\frac{5+8}{2} *4](https://tex.z-dn.net/?f=%20%5Cfrac%7B5%2B8%7D%7B2%7D%20%2A4)
= 26 m²
Hope this helps :)
Answer:
The volume of the square pyramid is ![80\ cm^{3}](https://tex.z-dn.net/?f=80%5C%20cm%5E%7B3%7D)
Step-by-step explanation:
we know that
The volume of a pyramid is equal to
![V=\frac{1}{3}Bh](https://tex.z-dn.net/?f=V%3D%5Cfrac%7B1%7D%7B3%7DBh)
where
B is the area of the base of pyramid
h is the height of the pyramid
in this problem we have
![B=16\ cm^{2}](https://tex.z-dn.net/?f=B%3D16%5C%20cm%5E%7B2%7D)
![h=15\ cm^{2}](https://tex.z-dn.net/?f=h%3D15%5C%20cm%5E%7B2%7D)
substitute the values
![V=\frac{1}{3}(16)(15)=80\ cm^{3}](https://tex.z-dn.net/?f=V%3D%5Cfrac%7B1%7D%7B3%7D%2816%29%2815%29%3D80%5C%20cm%5E%7B3%7D)