Answer:
21
Step-by-step explanation:
Answer:
y = 2x - 3
Step-by-step explanation:
Start by writing out the given equation.
-2x + y = -3
The goal is to isolate the variable y.
For this equation, all you need to do is add 2x to each side.
-2x + y + 2x = -3 + 2x
Therefore, the answer is y = 2x -3.
I don't know if you are are familiar with the equation y = mx + b, but here's a little refresher. m is the slope, or in this case 2. b is the y-intercept, or in this case -3.
The equation y = mx + b is slope intercept form, so if you know this, you should be able to write any equation in slope intercept form.
Hope this helps!
It is = a2 + b2=c2_________________________________________________________________________________________________________________________________
Answer:
The population density is 0.364 fish per gallon.
Step-by-step explanation:
The population density can be defined as the number of individuals (in this case, small tropical fish) per unit of area or volume. In this case, the volume of the aquarium (55 gallon).
The density can be calculated then as:
![d=\dfrac{P}{V}=\dfrac{20\;\text{fish}}{55\;\text{gal}}\approx0.364\dfrac{\text{fish}}{\text{gal}}](https://tex.z-dn.net/?f=d%3D%5Cdfrac%7BP%7D%7BV%7D%3D%5Cdfrac%7B20%5C%3B%5Ctext%7Bfish%7D%7D%7B55%5C%3B%5Ctext%7Bgal%7D%7D%5Capprox0.364%5Cdfrac%7B%5Ctext%7Bfish%7D%7D%7B%5Ctext%7Bgal%7D%7D)
The population density is 0.364 fish per gallon.
Remove unnecessary parenthesis.
-5k 3 - 6k +1 - 6k 2 + 5k (simplify each term) -15k - 6k + 1 - 12k +5k = -28k +1
Answer: 28k + 1