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bulgar [2K]
3 years ago
9

5) y = -7x - 13 8x + y = -14

Mathematics
1 answer:
Zolol [24]3 years ago
7 0

y = -7x - 13

y = -8x - 14 Subtracting:-

0 = x + 1

x = -1

From fisrst equation y = -7(-1) - 13 = -6

answer is x = -1 and y = -6

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5 0
3 years ago
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.

3 0
1 year ago
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Vilka [71]

Answer:

Corresponding

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3 0
3 years ago
Solve: 56(-56+57m)+ 45m
N76 [4]

Answer:

I just solved this as well and I got 102m as well.

Step-by-step explanation:

56 and -56 cancek eachother out. 57m + 45m can be added since they have the same variable. 57 + 45 is 102. So the answer is 102m.

6 0
3 years ago
Read 2 more answers
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