3 years ago

Can someone help me out with this please!

Mathematics

1 answer:

iren2701 [21]3 years ago

3 0

Domain is negative infinity to positive infinity or all real numbers

Range is 140 because it would be a straight line

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A chemist has 200 mL of a 10% sucrose solution. She adds x mL of a 40% sucrose solution. The percent concentration, y, of the fi

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Answer:

The chemist needs to add 400mL of 40% solution.

Step-by-step explanation:

The equation

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and we solve it the following way:

$30=\frac{0.1(200)+0.4x}{200+x} *100\\\\0.3 =\frac{0.1(200)+0.4x}{200+x}\\\\0.3(200+x)=0.1(200)+0.4x\\\\60+0.3x=20+0.4x\\\\40=0.1x\\\\x=\frac{40}{0.1} \\\\\boxed{x=400\:mL}$

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