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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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I think it’s 393.75 But not Sure can anyone confirm ? Or share the right answer
Naya [18.7K]

Answer:

$415.63

Step-by-step explanation:

it would have been 393.75, but he worked 5 hours overtime and got paid time and a half for it, meaning his normal pay plus half of it. (only for overtime tho).

so first calculate his normal pay:

40 × 8.75 = 350

then add overtime to it

8.75 × 5 = 43.75

43.75 × 1.5 = 65.625

65.625 + 350 = 415.625

round that and its 415.63!

5 0
3 years ago
This is for homework
zalisa [80]

Answer:

What grade is this?

Step-by-step explanation:

I don't understand.

5 0
3 years ago
Make x the subject of the following: b = x - 5
ipn [44]
When it says "the subject", it only means you need to isolate the x, or solve for x. To do that, we have to get the x by itself. But how can we do that? We'll have to get rid of that pesky -5. Well, what can we do to -5 to get to 0? Of course -- Add 5!
b=x-5
      +5

But whatever we do to one side of the equation, we have to do to the other. 
b=x-5
+5  +5

We're left with b+5=x. There's your answer!
<em>
</em><em>Don't forget to rate this answer the Brainliest!</em>


7 0
4 years ago
PLEASE HELP I WILL GIVE A BRAINLIEST TO THE BEST ANSWER THAT HAS ALL WORK SHOWN, THE CORRECT ANSWER AND MAKES SENSE.
OLga [1]
<span> -4w+8+4w=2+2
</span><span> -4w + 8 +4w = 4
</span> -4w + 8 +4w - 8 = 4 - 8
  0w = -4

answer

No solution
6 0
4 years ago
Help pretty please and thank you
belka [17]

9514 1404 393

Answer:

  • 0.404 . . . cm/day
  • the average growth per day in cm

Step-by-step explanation:

The slope is the x-coefficient in the equation, 0.404.

The slope is the rate of change of the dependent variable (height) with respect to the independent variable (number of days). In this case, it is the average increase in the plant's height each day, in cm.

5 0
3 years ago
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