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EastWind [94]
3 years ago
13

In a lab, 30% acid solution is being mixed with a 5% acid solution to create a 10% acid solution. What is the ratio of the amoun

t of the 30% solution used to create the 10% solution?
Mathematics
1 answer:
Archy [21]3 years ago
8 0

Answer:

1:4

Step-by-step explanation:

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An equation is given.
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3 years ago
Please help. I’ll mark you as brainliest if correct!
tatyana61 [14]

Answer:

Dave worked 60 hours.

Step-by-step explanation:

Let's assume that Dave worked a total of x hours.

Since Kate worked 5 hours less than Dave: x-5

And Sarah worked 10 more hours than Dave: x+10

Combined, the three siblings worked 185 hours.

(x)+(x+10)+(x-5) = 185\\x+x+10+x-5 = 185\\3x + 5 =185\\3x = 185 - 5\\3x = 180\\x = 180 \div 3\\x = 60

Dave worked 60 hours,

Kate worked 55 hours and Sarah worked 70 hours.

To check:

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6 0
3 years ago
which of the following equations represents a line that is parallel to y=5x-4 and passes through the point , 3,4
Ulleksa [173]

Answer:

y=5x-11

Step-by-step explanation:

parallel lines have the same slope 5

y-4=5(x-3)

y-4=5x-15

y=5x-15+4

y=5x-11

3 0
3 years ago
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