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Misha Larkins [42]
1 year ago
5

Dr. Jekyll has 180 mL of solution that is 20% acid. How many mL of

Mathematics
2 answers:
madam [21]1 year ago
8 0

Answer:

50%

Step-by-step explanation:

So here's what I think :

180 x 20% = 36

This 36 isn't that important.

20% + 30% = 50%

Ne4ueva [31]1 year ago
5 0

Answer: 54 mL

Step-by-step explanation: First, you need to find how many milliliters 10% is. To do this, divide 180 by 10, which equals 18. Then, since it needs to be thirty percent, times 18 by 3, which equals 54 mL. Hope this helps.

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Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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3 years ago
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Complete the steps to demonstrate why you multiply by the reciprocal when dividing fractions. Find 1/4 ÷ 3/8. ..................
Nataliya [291]
<span>To complete the steps to demonstrate why you multiply by the reciprocal when dividing fractions.

To find
\frac{1}{4}\div\frac{3}8}

Step 1:
Rewrite it as
\frac{\frac{1}{4}}{\frac{3}{8}}.


Step 2:
Multiply the numerator and the denominator by the reciprocal of
\frac{3}{8}.</span><span>

</span><span>\frac{\frac{1}{4}}{\frac{3}{8}}=\frac{\frac{1}{4}}{\frac{3}{8}}\times\frac{\frac{8}{3}}{\frac{8}{3}}


Step 3:
Simplify the denominator
\frac{\frac{1}{4}\times\frac{8}{3}}{1}                                                                 

Step 4:
Simplify the fraction
</span><span>\frac{1}{4}\times\frac{8}{3}.

We complete the solution as follows:
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3 years ago
Negative nine times the sum of a number and eighteen
bekas [8.4K]
-9(n+18) is the answer
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