For this case we must find the solutions of the following quadratic equation:
The roots will come from:
Where:
Substituting:
The roots are:
Answer:
Option C
Answer:
The answer is miles.
Step-by-step explanation:
To solve this is pretty easy,
We know that the equation is , and since we have to find the distance in 21 seconds, you just have to substitute the variable.
If this helped please give brainliest
Answer:
Infinitely many solution
Step-by-step explanation:
There seems to only be 1 line so they must have the same solutions.
Add the two numbers in your ratio and divid if from one hundred
This would equal 20
So to find the percentage for the colours as they are time the two ratio number to get 40:60 this is also the percentages.
If you add five more blue parts in to the ratio and leave the red alone you will get 2:8 this would give you a 80% blue part.
So the answer is
5 parts of blue are needed to make the mixture 80% blue.