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Serga [27]
3 years ago
13

PLEASE HELP 20 POINTS One day, River writes down the numbers $1,$ $2,$ $\dots,$ $999.$ What is the sum of all the digits that Ri

ver wrote down?
Mathematics
1 answer:
Temka [501]3 years ago
6 0

Answer:

LOL this is from AOPS

Step-by-step explanation:

LOL tryna cheat out here

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For the following pairs of equations explain why the equations are NOT equivalent.
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If you were to make both x's equivalent, you'd have to multiply the first equation by 2 to get rid of the coefficient, 1/2. However, you'd have to multiply 2 onto -8 as well, therefore the equation would turn into x - 16 = 18. That is not equivalent to x - 8 = 18.
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hope it helps u!

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