<em>x</em> = liters of 40% solution, which contributes a total of 0.4<em>x</em> liters of acid
<em>y</em> = liters of 30% solution, which contributes a total of 0.3<em>y</em> liters of acid
The chemist wants to end up with 50 liters, so
<em>x</em> + <em>y</em> = 50
and 36% of this -- 0.36 (50 liters) = 18 liters -- is acid, so that
0.4<em>x</em> + 0.3<em>y</em> = 18
Solve for <em>x</em> and <em>y</em> :
<em>y</em> = 50 - <em>x</em>
0.4<em>x</em> + 0.3 (50 - <em>x</em>) = 18
0.4<em>x</em> + 15 - 0.3<em>x</em> = 18
0.1<em>x</em> = 3
<em>x</em> = 30
<em>y</em> = 20
Answer:
0.85
Explanation:
Using the addition law of probability which states that for two events A and B, the probability that A or B will occur is the sum of their individual probabilities minus the probability that both A and B will occur. The addition rule is given by the formula:
P(A or B) = P(A ∪ B) = P(A) + P(B) - P(A ∩ B)
Let probability that a college freshman takes a math class the first semester = P(A) = 0.75
probability that a college freshman takes an English class the first semester = P(B) = 0.70
probability that a college freshman takes both a math class and an English class the first semester = P(A ∩ B) = 0.60
the probability that a college freshman takes a math class or an English class the first semester = P(A ∪ B) = P(A or B)
Therefore, P(A or B) = P(A ∪ B) = P(A) + P(B) - P(A ∩ B) = 0.75 + 0.7 - 0.6 = 0.85
P(A or B) = 0.85
The excerpt from the symptoms give the emotional power to the essay, with the use of the physical effects to add the reality.
<h3>What is the theme of the John Steinbeck's, "Symptom"?</h3>
The symptoms by John Steinbeck's deal with the after effect faced by the soldiers after the period of war. He made the use of World War II as the inspiration of his work.
The excerpt from symptoms describe the effects faced by the soldiers, and with the use of the words of past tense describing the physical effect such as salty taste, insensitive skin that add reality for the readers.
Learn more about Symptoms, here:
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Answer:
The moment when Minerva disguises Ulysses as an old beggar.
Explanation:
Answer:
............. Welp that solves that problem ............
Explanation: