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Scorpion4ik [409]
3 years ago
15

¡ Help Plz ! Give me the correct answer and earn 10pts!

Mathematics
1 answer:
slavikrds [6]3 years ago
4 0
Y=10x-7
Y+7=10x-7+7
Y+7=10x
Y-Y+7=10x-Y
7=10x-Y

10x-y=7
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Solve <br> 3c-5=2c+5<br> please naswer fast and I will give you 5 stars
Masja [62]

Answer:

10

Step-by-step explanation:

3c - 5 =2c +5

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3 years ago
A chemist needs 130 milliliters of a 47% solution but has only 35% and 87% solutions available. Find how many milliliters of eac
choli [55]

Answer: Amount of 35% solution required = 100 milliliters

Amount of 87% solution required  = 30 milliliters

Step-by-step explanation:

Given: Total solution required =  130 milliliters

Let x = Amount of 35% solution (in milliliters).

Then, Amount of 87% solution required = 130 - x

As per given,

Concentration = 0.35x +0.87(130-x)=0.47(130)

0.35x +113.1-0.87x=61.1\\\\\Rightarrow\ -0.87x+0.35x=61.1-113.1\\\\\Rightarrow\ -0.52 x= -52\\\\\Rightarrow\ x=\dfrac{52}{0.52}=100

Hence, Amount of 35% solution required = 100 milliliters

Amount of 87% solution required  = 130-100 milliliters =30 milliliters

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It’s 18. 1/2 b*h b=4 h=9
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azamat
Okay and what is the question you are asking?
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