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bixtya [17]
3 years ago
7

A chemist has 200mL of a 10% sucrose solution. She adds x mL of a 40% sucrose solution. The chemist needs the concentration of t

he final mixture to be 30% how many milliliters of the 40% solution should she add to the 10% solution to get this concentration ?
Mathematics
1 answer:
LekaFEV [45]3 years ago
6 0

Answer:

566

Step-by-step explanation:

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Both angles are right angles.

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Supplementary angles sum to 180°. Since we know that both angles are congruent, let's call them x and x. We can write the following equation:

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3 years ago
The Venn diagram shows the results of two events resulting from rolling a number cube.
tankabanditka [31]

Answer:

P(A|B)=\frac{2}{3}

P(A)*P(B)=\frac{1}{3}

P(A) =\frac{2}{3}

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Step-by-step explanation:

We use the Venn diagram to calculate the desired probabilities.

Note that there are 6 possible results in the sample space

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Then note that in the region representing the intercept of A and B there are two possible values.

So

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P(A | B)=\frac{P(A \ and\ B)}{P(B)}\\\\P(A | B)=\frac{\frac{1}{3}}{\frac{1}{2}}\\\\P(A|B)=\frac{2}{3}

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