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Ainat [17]
3 years ago
8

Can someone help me with this​

Mathematics
1 answer:
algol [13]3 years ago
7 0

Answer:

Step-by-step explanation:

(x+6)(x+3)=9+(x+1)

= x^2+3x+6x+18

=x^2+9x+18=9(x+1)

=x^2+9x+18=9x+9

tbs = to both sides

(-9x tbs)= 9x-9x=0 so x^2+18=9

(-18tbs) = x^2=9-18 becomes x^2=-9

x=\sqrt{-9}

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Answer:

The answer to your question is 43.8 mL of acid.

Step-by-step explanation:

Data

Total volume = 362 ml

12.1 % is acid

The Volume of acid = ?

Process

1.- Use the rule of three and cross multiplication to solve this problem.

               362 ml ------------------- 100%

                    x       -------------------  12.1 %

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2.- Round your answer to the nearest tenth.

                        43.802   only consider the first decimal

                        43.8 mL

3.- Conclusion

    A 12.1% solution of acid has 43.8 mL of acid.

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