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2 years ago

7

A chemist is using 381 milliliters of a solution of acid and water. If 12.2% of the solution is acid, how many milliliters of ac

id are there?

1 answer:

pantera1 [17]2 years ago

8 0

Answer:

46.482 ml

Step-by-step explanation:

381 x 12.2% =

381 x .122 = 46.482

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Use quadratic formula to solve 1-6x^2-x

eduard

Answer:

(3x-1)(2x+1)

Step-by-step explanation:

1-6x^2-x=0

-6x^2-x+1=0

6x^2+x-1=0

6x^2+(3-2)x-1=0

6x^2+3x-2x-1=0

3x(2x+1)-1(2x+1)=0

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3 years ago

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There is no difference, 6rs-(-2rs) if you get rid of the parenthesis you are left with 6rs- -2rs and two negatives make a positive therefore the answer will become 8rs... I hope this helps :)

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3 years ago

Evaluate 14+(-9)+(-9)

Vilka [71]

The answer to your question is -4

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3 years ago

All the fourth-graders in a certain elementary school took a standardized test. A total of 81% of the students were found to be

Dvinal [7]

Answer:

The probability that a student is proficient in mathematics, but not in reading is, 0.10.

The probability that a student is proficient in reading, but not in mathematics is, 0.17

Step-by-step explanation:

Let's define the events:

L: The student is proficient in reading

M: The student is proficient in math

The probabilities are given by:

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$P (M\bigcap L^c) = P (M) - P (M\bigcap L) = 0.74 - 0.64 = 0.1\\P (M^c\bigcap L) = P (L) - P (M\bigcap L) = 0.81 - 0.64 = 0.17$

The probability that a student is proficient in mathematics, but not in reading is, 0.10.

The probability that a student is proficient in reading, but not in mathematics is, 0.17

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3 years ago

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Veseljchak [2.6K]

Answer:

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Step-by-step explanation:

If you add 0.5 to -0.5, it will equal 0.

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2 years ago