C, there are 3 options the first time, and after that, there are 3 options for each of those. So it would be C.
The <em>correct answers</em> are:
A) Both can be solved by graphing;
C) Both can be solved by substitution; and
D) Both have solutions at the points of intersection.
Explanation:
Just as a system of linear equations can be solved by graphing, a system of quadratic equations can as well. We graph both equations. We then look for the intersection points of the graphs; these intersection points will be the solutions to the system.
We can also solve the system by substitution. If we can get one variable isolated, we can substitute this into the other equation to solve.
Answer:4
Step-by-step explanation:
2x-6=14
2x=8
x=4
<span>To provide consistent ways to identify and classify organisms as they are being studied.</span>
Answer:
Let's start by breaking down the problem.
This is how it should look. ↓
÷ 
⇒ 
⇒ 
What does that <em>x</em> mean? <em>x</em> is just a substituted value for the first 2 equations.
Now, we can solve.
÷ 
Add 3
Now, multiply 6 times 5 squared. What does 5 squared mean? 5 squared is just 5 times itself once. You most likely want to solve 5 squared before multiplying.
And now for the last step, multiply 25 times 6
With that information, the problem is solved! Your answer is 150
