Answer:y
y=2x−4
Explanation:Solve for the first variable in one of the equations, then substitute the result into the other equation.
Answer: Her return on investment is 20%
2. $40,000
Explanation:
An expression for the Ksp for hydroxyapatite would be written as follows:
Ksp =
<h3>What is
solubility constant?</h3>
In Chemistry, the solubility product constant (Ksp) can be defined as the equilibrium constant that describes a solid substance (solute) which is being dissolved in an aqueous solution.
This ultimately implies that, Ksp is typically used in chemistry to denote an equilibrium level at which a solute dissolves in an aqueous solution.
Mathematically, an expression to represent the solubility product constant (Ksp) for hydroxyapatite is written as follows:
Ksp =
Read more on solubility product here: brainly.com/question/15396081
The answer you are looking for is 49 cm².
Solution/Explanation:
Writing out the formula for the area of a square
A=s²
By the way, "s" means the same thing as side.
If the side length is 7, this means that s=7.
Substituting the given value of the variable
A=7²
7² or 7×7=49.
You will get A=49.
Or, even better, A=49 cm².
Also, by the way, "A" is the same thing as area.
So, therefore, the final answer to this problem is A=49 cm².
Hope this helped answer your question for you. Good day to you.