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timurjin [86]
3 years ago
13

Please help! Idk what to do I've tried so many ways.

Mathematics
2 answers:
erastovalidia [21]3 years ago
4 0
Number 10 is B 4x 21
Elanso [62]3 years ago
4 0
B4 x 21 it’s kinda easy
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To mix plaster for a dental model, 35 mL of water is used for 100g of plaster. How many mL of water should be used for 250g of p
laila [671]

Okay, here we have this:

Considering the provided information, we are going to calculate the requested value, so we obtain the following rule of three:

\begin{gathered} \frac{x}{35mL\text{ of water}}=\frac{250g\text{ of plaster}}{100g\text{ of plaster}} \\ x=\frac{250g\text{ of plaster}}{100g\text{ of plaster}}\cdot35mL\text{ of water} \end{gathered}

Solving for x:

\begin{gathered} x=2.5\cdot35mL\text{ of water} \\ x=87.5mL\text{ of water} \end{gathered}

Finally we obtain that 87.5mL of water should be used for 250g of plaster.

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divide 64 by 2 which gives the value of x

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I would have to say c 

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