The correct answer is option C: 8
Step-by-step explanation:
We will use the mid-segment theorem of triangle to solve this problem.
We can see that the line which is represented by 2x-9 is the mid-segment of the triangle as it passes from mid-points of two sides of the triangle
The mid-segment theorem states that "Any line that passes through the mid-points of two sides of triangle is parallel to the third side and in length, it is half the length of the third side
In the given figure,
The length of line represented by 2x-9 will be half of 14
So,
Adding 9 on both sides
Dividing both sides by 2
Hence,
The correct answer is option C: 8
Keywords: Triangle, mid-points
Learn more about the mid-segment theorem at:
#LearnwithBrainly
Answer:
10 kg
Step-by-step explanation:
In 3% concentration of 20 kg of seawater, there will be kg of salt.
So, if it is a 2% solution of seawater,
Then 2 kg salt will be there in 100 kg solution.
So, 0.6 kg salt will be there in kg of solution.
So, to make a solution from 3% to 2% we have to add (30 - 20) = 10 kg of water with a 20 kg solution. (Answer)