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Mariana [72]
2 years ago
15

A scientist needs 15 liters of 25% acid solution for an experiment, but she only has a 10% solution and a 35% solution.How many

liters of the 10% and the 35% solutions should mix to get the solution she needs?
Mathematics
1 answer:
Artyom0805 [142]2 years ago
8 0
By far fcurcutcugvpjvlg chi cig m
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A particular beach is eroding at a rate of 4 centimeters per year. A realtor converts this rate to millimeters per day. Which
Aloiza [94]

Answer:

\frac{4cm}{1year}*\frac{10mm}{1cm}*\frac{1year}{365days}

Step-by-step explanation:

Whenever we are doing unit conversions, we have to remember to make the first ratio and then each successive ratio should be put <em>in such a way</em> that the top and bottom cancels out with each unit and whatever we want, remains.

A simple example would be if we were to just convert from cm to mm. Suppose we want to convert 5 centimeters to millimeters. We can write the ratios is 2 ways:

First:

5cm*\frac{10mm}{1cm}

Second:

5cm*\frac{1cm}{10mm}

The first one is correct since we want mm, mm should be on top and cm should be on bottom form cm and cm to get canceled.

Now, for our problem, we want mm on top and day on bottom. So, cm and year should cancel. Looking at the first choice, the conversion factors are correct & skimming through, we see that

cm and cm cancels (top and bottom), also year and year cancels (top and bottom), it will leave us with mm on top and days on bottom, <em>which is what we want</em>.

First answer choice is right.

6 0
3 years ago
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BRAINLIEST TO THE FIRST PERSON TO ANSWER!!The expression on the left side of an equation is shown below.
dusya [7]

Answer:

123added 23

Step-by-step explanation:

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Suppose that $1800 is borrowed for three years at an interest rate of 2% per year, compounded continuously. Find the amount owed
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1908

Step-by-step explanation:2% of 1800 is 36 36 x 3 is 108 + 1800 =1908

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Convert 6 1/2 ft into in
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78 inches if you you know that a foot is 12 inches you can add 12 for every inch then add 6 for the half making it 78 inches. 
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Find exact value of the expression:<br><br> tan -1 square root 3/3
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Hello,

 if tan x=√3/3 then x=30°+k*180° k: integer

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