Find the difference between the points (13, 20) and (18, 8). a. 7 b. 11 c. 13
1 answer:
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Answer:
Scale factor = 4
Step-by-step explanation:
Scale factor =
Since, S is being dilated with a scale factor to form T,
So, the figure S is the preimage and figure T will be the image,
Length of one side of image T = 8
Length of one side of preimage = 2
Therefore, Scale factor =
= 4
Scale factor by which figure S has been dilated to form figure T is 4.
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.