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Sedbober [7]
3 years ago
8

What is the fifth term of the arithmetic sequence 7,3,-1....

Mathematics
1 answer:
Dmitrij [34]3 years ago
7 0
The formula is a1+d(n-1). 7+ -4(5-1). a5 = -9.
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Zielflug [23.3K]

Answer:

100

Step-by-step explanation:

Okay so I'm not 100% sure but I think it's 100 because:

Angle B and D are the same, so the 12.5 areas will be the same (I honestly suck at explaining I'm really sorry.) But, if you add the sides from angle B and D it will be 50 because 12.5 + 12.5 + 12.5 + 12.5 (or 12.5 * 4). Meanwhile, For angle A and C, both outsides are the same as the other side.

I'm so sorry I can't explain the problem well but once you add them:

11.5 + 11.5 + 12.5 + 12.5 + 12.5 + 12.5 + 13.5 + 13.5 = 100

4 0
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3 years ago
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meriva

Answer:

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Step-by-step explanation:

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3 years ago
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lord [1]

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Step-by-step explanation:

Initially , Mei subscribed $24 for 12 issues for a magazine .When Mei used a coupen then 3 free bonus issues added to her subcsription .Therefore we can see the coupon reduces the cost per issue of Mei's subscription. Before use of coupon the cost of each issue is $2 and after added 3 more issue of coupon then the cost per issue is $1.6

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Step-by-step explanation:

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