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lara [203]
3 years ago
13

The 50th term of an arithmetic sequence is 86 and the common difference is 2.  Find the first three terms of the sequence.

Mathematics
1 answer:
Nesterboy [21]3 years ago
6 0
a_n=a_{n-1}+d=a_{n-2}+2d=\cdots=a_1+(n-1)d

which means

a_{50}=86=a_1+49\times2\implies a_1=-12

which in turn means the next two terms are a_2=-10 and a_3=-8.
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Show your work please.
Kruka [31]

Answer:

Tauren has 78 keychains

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Marcus has 68 keychains

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Step-by-step explanation:

I got this answer by doing this:

If Tauren has 78 keychains then its gonna be left like that.

If everybody else has an average of 68 keychains then divide 68 by 2 to get half of what marcus has which equals 34.

Then add the amount of James and marcus keychains which is 68 plus 34 which equals 102, the subtract the 28 because it says Yayha has 28 fewer keychains and that equals 74.

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(This was a quickly made response, adjust it anyway you would like and if it doesn't fit the question than it is perfectly OK to not use it!)

9 0
3 years ago
There were 5 people who bought tickets to a football game.They bought 3 tickets each.How many tickets were bought in all
VLD [36.1K]
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Read 2 more answers
Please help!! Urgent! Due soon! - A bedroom is initially squat-shaped with each side x feet long. The room is then expanded so t
Masja [62]

Answer:

The second one; x²+7x+12

Step-by-step explanation:

So, since the beginning lengths of the square is x and x, the area of the square is x².

But then, you add 3 to one length, so that side is now (x+3), and then you add 4 to the width, so that is now (x+4).

Finally, you would multiply them together to get the equation you would use to find the new area.

For this, you would cross-multiply everything together; the x in the length by the x in the width, the x in the length by the 4 in the width, the 3 in the length by the x in the width, and then the 3 in the length by the 4 in the width. Now, all you have to do is add all of these together to get your answer.

Here's the work:

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5 0
2 years ago
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