65.99(0.15)
Now take that number and subtract it from the original cost
65.99-9.9
56.09
Answer: 10⁻⁸°⁹
<u>Step-by-step explanation:</u>
![pH=log\bigg(\dfrac{1}{[H^+]}\bigg)\\\\\text{use log expansion rules to get:}\\pH=log\ 1-log\ [H^+]\\\\8.9=0\ -\ log\ [H^+]\\\\8.9=-log\ [H^+]\\\\-8.9=log\ [H^+]\\\\\text{use log transformation rules to get the following exponential equation:}\\10^{-8.9}=[H^+]](https://tex.z-dn.net/?f=pH%3Dlog%5Cbigg%28%5Cdfrac%7B1%7D%7B%5BH%5E%2B%5D%7D%5Cbigg%29%5C%5C%5C%5C%5Ctext%7Buse%20log%20expansion%20rules%20to%20get%3A%7D%5C%5CpH%3Dlog%5C%201-log%5C%20%5BH%5E%2B%5D%5C%5C%5C%5C8.9%3D0%5C%20-%5C%20log%5C%20%5BH%5E%2B%5D%5C%5C%5C%5C8.9%3D-log%5C%20%5BH%5E%2B%5D%5C%5C%5C%5C-8.9%3Dlog%5C%20%5BH%5E%2B%5D%5C%5C%5C%5C%5Ctext%7Buse%20log%20transformation%20rules%20to%20get%20the%20following%20exponential%20equation%3A%7D%5C%5C10%5E%7B-8.9%7D%3D%5BH%5E%2B%5D)
What Do you need help with if you added a picture we cant see it
The area of the ground floor after it has been reduced to the nearest tenth is 10,681,800 square foot.
<h3>What is the area of the ground floor?</h3>
In order to determine the area of the ground floor after it has been reduced, the area of the floor has to reduced by 6.3%.
Area that was reduced = 6.3% x 11,400,000 = 718,200
New area = 11,400,000 - 718,200 = 10,681,800 square foot
To learn more about percentages, please check: brainly.com/question/25764815
Answer:

Step-by-step explanation:
Since the denominators are common, add the numerators, leaving the denominator, that is

= 