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julia-pushkina [17]
3 years ago
6

If one atom of carbon weighs 1.99 × 10^−22 g and one atom of hydrogen weighs 1.67 × 10^−27 g, which element weighs more? Explain

your choice.
Mathematics
1 answer:
garik1379 [7]3 years ago
8 0

Answer:

The atom of carbon weighs more

Step-by-step explanation:

we have

<em>Atom of carbon weighs</em>

1.99*10^{-22}\ g=1.99*10^{-22}(\frac{10^{5}}{10^{5}})=199,000*10^{-22}(\frac{1}{10^{5}})=199,000*10^{-27}\ g

<em>Atom of hydrogen weighs</em>

1.67*10^{-27}\ g

Compare

199,000*10^{-27}\ g > 1.67*10^{-27}\ g

therefore

The atom of carbon weighs more

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Bill has $2.00 in quarters and dimes. the number of quarters is 4 less than twice the number of dimes. find the number of coins
Dafna1 [17]
Define your variables:
Q: number of quarters
D: number of dimes

Next, create your equations
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Because one variable (Q) is already written in terms of the other variable, D, you can already start solving with substitution.
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Substitute D back into the other equation to find Q. 
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Substitute D and Q into the second equation to check.
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7 0
3 years ago
Can someone help me with this trigonometry problem
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Sin A=0.7245<br> A=<br><br> sin D=0.4567<br> D=
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<span>The next, most complex way would be to evaluate terms in the infinite series representation of the arcsine function which is the way the sine tables were developed for publication. That series is </span>
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<span>The result for any of those methods would be B = 46.4° </span>

<span>Geometrically, you could: </span>
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4 0
3 years ago
Which expression is equivalent to 6x³+y²-5x³+2y²​
gladu [14]

Answer:

Step-by-step explanation:

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Combine like terms

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