a chemist mixes 4 liters of one acid solution with 10 liters of a 40% solution, resulting in a 30% acid solution. what is the va
lue of x, the acid concentration of the forst solution?
1 answer:
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Answer:
4% probability that fazio selects a striped jersey both times.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this problem:
For each jersey, there are 2+5+3 = 10 possible options, two of which are striped.
So twice 2/10
4% probability that fazio selects a striped jersey both times.
Answer:
Step-by-step explanation:
For this exercise it is important to remember that a Right triangle is a triangle that has an angle that measures 90 degrees.
According to the Altitude Rule, given a Right triangle, if you draw an altitude from the vertex of the angle that measures 90 degrees (The right angle) to the hypotenuse, the measure of that altitude is the geometric mean between the measures of the two segments of the hypotenuse.
In this case, you can identify that the altitude that goes from the vertex of the right angle () to the hypotenuse of the triangle, is:
Then, based on the Altitude Rule, you can set up the following proportion:
According to the Leg Rule, each leg is the mean proportional between the hypotenuse and the portion of the hypotenuse that is located directly below that leg of the triangle.
Knowing this, you can set up the following proportions: