Answer: Choice D)
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Work Shown:
Point A starts at (-2,3) and moves to (2,5) after applying the translation rule of "shift 4 to the right, 2 up".
Use the distance formula to find the distance from (-2,3) to (2,5)
Suppose you add x liters of pure water to the 10 L of 25% acid solution. The new solution's volume is x + 10 L. Each L of pure water contributes no acid, while the starting solution contains 2.5 L of acid. So in the new solution, you end up with a concentration of (2.5 L)/(x + 10 L), and you want this concentration to be 10%. So we have
and so you would need to add 15 L of pure water to get the desired concentration of acid.
Answer:
11.3%
Step-by-step explanation:
Answer:
45,000 people
Step-by-step explanation:
Let
P -----> the number of people, that are left in the stadium
M ----> the time in minutes
we have
This is a linear equation in slope intercept form
where
The slope is
----> is negative because is a decreasing function
The P-intercept is
Remember that the P-intercept is the value of P when the value of M is equal to zero
That means
For M=0 min
P=45,000 people (number of people that were present when the game ended but before people started to leave)