15 = 5/3(x + 12)
15/(5/3) = x + 12
15 * 3/5 = x + 12
45/5 = x + 12
9 = x + 12
x = -3
<h3>The surface area of a piece of paper is
![13700\ mm^2](https://tex.z-dn.net/?f=13700%5C%20mm%5E2)
</h3>
<em><u>Solution:</u></em>
surface area of a piece of paper = 137 sq cm
<em><u>Use the fact that 10 mm = 1 cm to convert this area to mm^2</u></em>
![1\ cm = 10\ mm](https://tex.z-dn.net/?f=1%5C%20cm%20%3D%2010%5C%20mm)
Then,
![1\ cm^2 = 100\ mm^2](https://tex.z-dn.net/?f=1%5C%20cm%5E2%20%3D%20100%5C%20mm%5E2)
<em><u>Convert 137 sq cm to sq mm</u></em>
![137\ cm^2 = 137 \times 100\ mm^2\\\\137\ cm^2 = 13700\ mm^2](https://tex.z-dn.net/?f=137%5C%20cm%5E2%20%3D%20137%20%5Ctimes%20100%5C%20mm%5E2%5C%5C%5C%5C137%5C%20cm%5E2%20%3D%2013700%5C%20mm%5E2)
Thus, surface area of a piece of paper is ![13700\ mm^2](https://tex.z-dn.net/?f=13700%5C%20mm%5E2)
Change the x for b in your question
Find attached solution.
With Rough Work by the right hand side.
Note that when you carry out the division, you then multiply out with the divisor, (y-3)
I hope this helps.
Answer:
Toshi must begin his walk at 11:00 AM in order that he can return by 8:00 PM.
Step-by-step explanation:
Since the Gotemba walking trail up Mount Fuji is about 9km long, and walkers need to return from the 18km walk by 8pm, if Toshi estimates that he can walk up the mountain at 1.5km / h on average, and down at twice that speed , these speeds taking into account meal breaks and rest times, to determine what is the latest time he can begin his walk so that he can return by 8pm the following calculation must be performed:
Climb: 1.5 km / h
Descent: 2 x 1.5 km / h = 3 km / h
Climb: 9 km / 1.5 km / h = 6 hours
Descent: 9km / 3 km / h = 3 hours
Total: 9 hours
8 PM = 20:00
20:00 - 09:00 = 11:00
Thus, Toshi must begin his walk at 11:00 AM in order that he can return by 8:00 PM.