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maw [93]
3 years ago
6

A tank contains seven liters of 10% alcohol solution. how many liters of 6% alcohol should be added to have 8% alcohol solution?

Mathematics
1 answer:
kow [346]3 years ago
7 0

Answer:

b

Step-by-step explanation:

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Please help don’t understand
sergejj [24]

Answer:

x=35

Step-by-step explanation:

2x+15+2x-10+x=180

combine factors

5x+5=180

-5 from both sides

5x=175

divide 175/5x

x=35

8 0
3 years ago
A student draws a triangle with a perimeter of 36cm. The student says the longest length is 18cm. How do you know the student is
Crazy boy [7]

The length of the first two sides of a triangle must be greater than the length of the last side.  If the longest length were 18, the first two sides would be too short.  36-18=18, 18 is equal not greater than 18 which means the sum of the first two sides are too short.

6 0
3 years ago
Add: (g2 – 4g4 + 5g + 9) + (–3g3 + 3g2 – 6)
TiliK225 [7]
Group like terms

-4g^4 - 3g^3 + g^2 + 3g^2 + 5g + 9 - 6

combining like terms:-

= -4g^4 - 3g^3 + 4g^2 + 5g + 3
7 0
3 years ago
Read 3 more answers
One fifth of all Lily's dog toys are red. What if Lily has 8 toys that are red? How many dog toys would she have? Lily has dog t
horrorfan [7]
She would have 4/5 dog toys that are left. So about 40 dog toys.
   Hope this would work and help!
5 0
3 years ago
Read 2 more answers
What is the equation of a line with slope -1/2 passing through (-5,4)?
elena-14-01-66 [18.8K]
For this question you need to use what's called point-slope form. It's named this way because you can use it if you have both the slope and a point at which the line passes through. That said, the equation is as follows:

y - y1 = m(x - x1)

Both y1 and x1 represent the y and x coordinates you are given in the question. Also, m represents the slope of the line that you are given. Knowing this, our equation now looks like this:

y - 4 = -0.5(x - (-5))

And now simplify:

y - 4 = -0.5(x + 5)
y - 4 = -0.5x - 2.5

y = -0.5x + 1.5
4 0
3 years ago
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