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MaRussiya [10]
3 years ago
5

Someone do this for me plz

Mathematics
2 answers:
kumpel [21]3 years ago
4 0
Iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiioi
sladkih [1.3K]3 years ago
3 0

Answer:

(all in standard form)

1. 6x^2-x+4

2. -3x^2-4x+6

3. s^3+s^2+4s+1

4. 5a^3-a^2-2a+10

5. a^4+a^3-3a^2+4

6. u^3-u^2+9u+2

7. -8u^2+5u-2

8. 81y^3+3y^2+9y+18

9. -3a^2+5a-2

10. 21^3+2b^2+4b-8

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Genrish500 [490]

Answer:

B: 2800 hydrogen atoms

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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