128$ is the new sale price...
320 x .60 = 192....
now minus that with the normal price ..
310 - 192 = 128$
<h3>Geometric mean of 5 and 7 is 5.9161</h3>
<em><u>Solution:</u></em>
Given that,
We have to find the geometric mean of 5 and 7
The geometric mean of two numbers a and b is the square root of product of a and b
Which means,
![Geometric\ mean = \sqrt{ab}](https://tex.z-dn.net/?f=Geometric%5C%20mean%20%3D%20%5Csqrt%7Bab%7D)
<h3><u>Geometric mean of 5 and 7</u></h3>
![Geometric\ mean = \sqrt{5 \times 7}\\\\Geometric\ mean = \sqrt{35}\\\\Geometric\ mean = 5.9161](https://tex.z-dn.net/?f=Geometric%5C%20mean%20%3D%20%5Csqrt%7B5%20%5Ctimes%207%7D%5C%5C%5C%5CGeometric%5C%20mean%20%3D%20%5Csqrt%7B35%7D%5C%5C%5C%5CGeometric%5C%20mean%20%3D%205.9161)
Thus geometric mean of 5 and 7 is 5.9161
If it can scan 72 photos in 8 minutes, it can scan 72/8 = 9 photos per minute.
So in 23 minutes, it can scan 9x23 = 207 photos
The independent variable is something we choose without regards of other things. For example X is an independent variable because we plug in points for X. To get a dependent Y value.