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dolphi86 [110]
3 years ago
10

Answer pls.pls hurry.Thank you.Will give brainlest

Mathematics
2 answers:
gtnhenbr [62]3 years ago
5 0
The answer is C. 1

hope this helps!!
tankabanditka [31]3 years ago
3 0

Answer:

C. 1

Step-by-step explanation:

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Help me out :) 15 points! Show work, and only answer if you know how to do it correctly.
Volgvan

Answer:

28

Step-by-step explanation:

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ehidna [41]

Answer:

11 cups of flour..... any other questions?

Step-by-step explanation:

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3 years ago
Solve by unfolding: a0=2, and, n>=1, a_n=7a_n-1.
vodomira [7]
We are told that the first term is 2.  The next term is 7(2) = 14; the third term is 7(14) = 98.  And so on.  So, the first term and the common ratio (7) are known.

The nth term of this geometric series is a_n = 2(7)^(n-1).

Check:  What is the first term?  We expect it is 2.  2(7)^(1-1) = 2(1) = 2.  Correct.

What is the third term?  We expect it is 98.  2(7)^(3-1) = 2(7)^2 = 98.  Right.<span />
6 0
3 years ago
In the video, the water level was 15 milliliters before adding the chain, and 20 milliliters after adding the chain. When I weig
mr_godi [17]

Answer:

  • 39.7%

Explanation:

<u />

<u>1. First find the density of your chain</u>

  • Density = mass / volume

  • Volume = displaced water volume

                      = Volume of Final level of water - initial level of water

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  • Mass = 66.7 g

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<u />

<u>2. Second, write the denisty of the chain as the weighted average of the densities of the other metals:</u>

Mass of gold × density of gold + mass of other metals × density of other metals, all divided by the mass of the chain.

Calling x the amount of gold, then the amount of other metals is 66.7 - x:

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       19.3x+635.66-9.7x=889.778

      9.6x=254.118\\\\x=26.47

Then, there are 26.47 grams of gold in 66.7 grams of chain, which yields a percentage of:

  • (26.47 / 66.7) × 100 = 39.7%
7 0
3 years ago
Factor out the combine term 21x+49y​
Cloud [144]
(not sure if this is right just trying to help) 7(3x+7y)
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