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Afina-wow [57]
3 years ago
14

HELP!!!

Mathematics
2 answers:
Hunter-Best [27]3 years ago
6 0
I got my answer by multiplying 6.02 x 1023 and i got 6,158.46 that is = to 1 so then divide that by 800 = 7.70 oops went ahead of myself, A/answer ='s C duh, did you even read the question?
vladimir1956 [14]3 years ago
3 0
Create a conversion factor from "<span>There are 6.02 × 10^23 atoms in 1 gram of hydrogen:"

6.02*10^23 atoms
-------------------------
          1 gram

Then mult. 800 grams by this conversion factor:

</span>6.02*10^23 atoms      800 grams
------------------------- * ----------------
          1 gram                     1

This comes out to 4816*10^23 atoms, which, in scientific notation, is 

4.816*10^26 atoms.
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If b
lys-0071 [83]

Answer:

46.2^o

Step-by-step explanation:

<u><em>The correct question is</em></u>

If b = 9 and c = 13, what is the measure of ∠A? (round to the nearest tenth of a degree)

The picture in the attached figure

we know that

In the right triangle ABC

cos(A)=\frac{b}{c} ---> by CAH (adjacent side divided by the hypotenuse)

substitute the given values

cos(A)=\frac{9}{13}

using a calculator

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7 0
3 years ago
What is 2 thirds plus 3 fourths
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8 0
3 years ago
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Volgvan
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3 years ago
Paul can walk 15 steps in 5 minutes. How long does it take Paul to walk 75 steps at the same speed? I got 25 minutes am i right?
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The best way to solve this one is with a proportion:

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3 years ago
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Nataly [62]
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