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Fofino [41]
3 years ago
11

Suppose that a chemist is mixing two acid​ solutions, one of 15​% concentration and the other of 25​% concentration. Which of th

e following concentrations could not be​ obtained?
Choose the correct answer below.
Mathematics
1 answer:
RUDIKE [14]3 years ago
3 0

Answer: d. 29%

Step-by-step explanation:

The mixture of the two concentrations should equal a concentration that is between the concentration percentages of the two solutions.

This is because the lower concentration percentage will pull the higher one down while the higher concentration will pull the lower one up. It will not be possible to get a mixture concentration that is lower than the lower concentrated acid or higher than the higher concentration acid.

Mixture concentration must be between 15% and 25%.

Option D at 29% is therefore not possible.

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I forgot how to divide fractions properly. please send help.
Mamont248 [21]

Answer:

2.5 or 10/4

Step-by-step explanation:

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Integers can be fractions. Which are just the summation of equal parts. So integers can be written in any fractional form as you like,

2/1÷4/5

But turning your fraction into an integer is not enough to divide, you must first use the reciprocal form of your dividend. and then you multiply to obtain your answer. (The reason is that division is multiplication of the reciprocal)

2/1×5/4

And tadaa! you get your answer

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You can also simplify it!

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3 years ago
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wlad13 [49]

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3 years ago
1. What is the solution to this system?<br> (-2,-2)<br> (2-2)<br> (-2,2)<br> (2, 2)
Delicious77 [7]

Step-by-step explanation:

picture is not clear but I guess 2,-2

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3 years ago
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The sum of half of a number and 49is 2 whole 1/4 of the number. find the number
Mrac [35]

Answer:

-93.5

Step-by-step explanation:

let the number be y

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6 0
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Step-by-step explanation:

hope it helps you

have a great day!!!

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