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blsea [12.9K]
3 years ago
11

The students in chemistry class have 75 milliliters of a pure acid which must be diluted to a solution that is 10% acid. How man

y milliliters of water should they add?
Mathematics
1 answer:
lana66690 [7]3 years ago
6 0

Answer:

Add W ml

75*100 + W*0 = (75+W)*10

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IgorLugansk [536]

Answer:

Simplifying

lx2 + mx + n = 0

Solving

lx2 + mx + n = 0

Solving for variable 'l'.

Move all terms containing l to the left, all other terms to the right.

Add '-1mx' to each side of the equation.

lx2 + mx + -1mx + n = 0 + -1mx

Combine like terms: mx + -1mx = 0

lx2 + 0 + n = 0 + -1mx

lx2 + n = 0 + -1mx

Remove the zero:

lx2 + n = -1mx

Add '-1n' to each side of the equation.

lx2 + n + -1n = -1mx + -1n

Combine like terms: n + -1n = 0

lx2 + 0 = -1mx + -1n

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Divide each side by 'x2'.

l = -1mx-1 + -1nx-2

Simplifying

l = -1mx-1 + -1nx-2

Step-by-step explanation:

Hope this helped you!

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Kelly and Daniel wrote the following proofs to prove that vertical angles are congruent. who is correct?
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Kelly? Im not sure actually... Im going with Kelly but im probably wrong
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A book sold 39,300 copies in its first month of release. Suppose this represents 6.1% of the number of copies sold to date. How
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Answer:

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Step-by-step explanation:

Since this is a proportion problem, and we are given three values and one variable which is the total number of copies sold to date (x). Then we can use the Rule of Three to solve this problem. To do this we simply multiply the diagonal values and divide by the last value which would give us the value of the variable x

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Answer:

A.(5,1) to

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Answer:

whole number or an integer.

Step-by-step explanation: hope this helps.

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