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lesya [120]
3 years ago
11

3

Mathematics
1 answer:
kaheart [24]3 years ago
6 0

Answer:

x = 12, y = 1

Step-by-step explanation:

y - x = -13

-4x + 3y = -51

Find y.

y = -13 + x

Plug y into 2nd equation

-4x + 3y = -51

-4x + 3(-13 + x) = -51

-4x + -39 + 3x = -51

-x = -12

x = 12

y = -13 + 12

y = -1

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Genrish500 [490]

Answer:

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C: 6760 hydrogen atoms

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Step-by-step explanation:

B: We know the formula for water is H2O. SO that means that there is 2 hydrogen atoms and 1 oxygen atom. So there is 2 times the amount of hydrogen atoms so we can do 1400*2=2800, So there is 2800 hydrogen atoms in the water.

C: Same thing as B. 3380*2=6760

D: y=amount of oxygen atoms*2. Because there is one oxygen atom and two hydrogen atoms so 1*2=2.

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Answer:

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2 years ago
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Answer:

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Step-by-step explanation:

Plug this into the formula. First, subtract the numbers in the parentheses. Then, square them. Add those totals together. Lastly, take the square root using a calculator.

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