First all numbers must be presented in the same format. So change the fractions to whole numbers.
5/8 = .633
6 5/8 = 6.633
Now you can start.
Add all the negative numbers first.
I add
(-) .633
0.4
0.4
6.0
2.9
3.2
-------------
-13.533 centimeters
Add the positive numbers together
3.2
6.633
0.3
---------
10.133
Now you can subtract
-13.533
Minus
10.133
--------
-3.4 centimeters
So the water level is down by -3.4 centimeters over the entire 9 months period.
Answer:
8
Step-by-step explanation:
Answer:1
Step-by-step explanation:
Both are whole numbers,so 1 is an answer,
18/1=18
21/1=21
If you write
![y=x^{1/3}](https://tex.z-dn.net/?f=y%3Dx%5E%7B1%2F3%7D)
, you'll notice this is really just a quadratic equation that can be factorized:
![2x^{2/3}+3x^{1/3}-5=0\iff 2y^2+3y-5=0\iff (2y+5)(y-1)=0\iff(2x^{1/3}+5)(x^{1/3}-1)=0](https://tex.z-dn.net/?f=2x%5E%7B2%2F3%7D%2B3x%5E%7B1%2F3%7D-5%3D0%5Ciff%202y%5E2%2B3y-5%3D0%5Ciff%20%282y%2B5%29%28y-1%29%3D0%5Ciff%282x%5E%7B1%2F3%7D%2B5%29%28x%5E%7B1%2F3%7D-1%29%3D0)
So you have
![2x^{1/3}+5=0\implies 2x^{1/3}=-5\implies x^{1/3}=-\dfrac52\implies x=-\dfrac{125}8](https://tex.z-dn.net/?f=2x%5E%7B1%2F3%7D%2B5%3D0%5Cimplies%202x%5E%7B1%2F3%7D%3D-5%5Cimplies%20x%5E%7B1%2F3%7D%3D-%5Cdfrac52%5Cimplies%20x%3D-%5Cdfrac%7B125%7D8)
and
Answer:
78.5
Step-by-step explanation: