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elixir [45]
2 years ago
7

What amount of pure acid must be added to 600 mL of a 20% acid solution to produce a 75% acid solution?

Mathematics
1 answer:
jarptica [38.1K]2 years ago
6 0
You must add another 600ml acid. Good luck and pls mark as brainliest if I helped
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Sales tax 7% how much will I be charged on a $85
CaHeK987 [17]
Tax= 85 times 7% = 85 times 0.07

tax =85 times 0.07 = 5.95
  
tax = 85 = 5.95 2= 90.95
  
   the answer is   90.95
7 0
3 years ago
WILL MARK BRAINLIEST ON CORRECT ANSWER
erik [133]
I believe none is the answer due to the fact it isn’t symmetrical. sorry if i am wrong. let me know if i am
8 0
3 years ago
Question 9 of 13
blondinia [14]

Answer:

Actually, you have the correct answer. I think you are confused as to what the exact answer might be.

4 0
2 years ago
Read 2 more answers
allen is mixing red and yellow paint to make two different shades of orange. to make 1 cup of dark orange paint he needs 7 ounce
slavikrds [6]

Answer:

42 ounces of yellow paint.

Step-by-step explanation:

  • To make three cups of dark orange, you just need to remember that to make one cup you need: 7 ounces of red paint and 1 ounce of yellow paint. Then, to make three cups, we just have to multiply these proportions by three,which means 7x3 ounces of red paint =21 ounces of red paint, plus 3x1 ounces of yellow paint =3 ounces of yellow paint. Then we need 21 ounces of red paint and 3 of yellow paint to make three cups of dark orange.
  • To make one cup of light orange, we need 13 ounces of yellow paint, and 3 ounces of red paint. Then, to make three cups, we just multiply this proportion by 3, as follows: 13x3 ounces of yellow paint = 39; and 3x3 ounces of red paint =9.  Then we need 9 ounces of red paint and 39 of yellow paint to make three cups of light orange.
  • Adding up the amount of ounces we need to make dark orange and light orange, we get a total amount of 21+9=30 ounces of red paint and 3+39=42 ounces of yellow paint to make three cups of light orange and three cups of dark orange.
7 0
3 years ago
Solve 20 - x/3 = x/2 , put the number only in the box.
Nikitich [7]

Answer:

<h2>x = 24</h2>

Step-by-step explanation:

20 -  \frac{x}{3}  =  \frac{x}{2}

Multiply through by the LCM that's 6 in order to eliminate the fraction

That's

6 \times 20 - 6 \times  \frac{x}{3}  = 6 \times  \frac{x}{2}  \\ 120 - 2x = 3x

Using the addition property add 2x to both sides of the equation

That's

3x + 2x = 120 + 2x - 2x \\ 5x = 120

<u>Divide both sides by 5</u>

\frac{5x}{5}  =  \frac{120}{5}

We have the final answer as

<h3>x = 24</h3>

Hope this helps you

4 0
3 years ago
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