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skad [1K]
3 years ago
15

I would like some help on this please. :) The attachment is below.

Mathematics
1 answer:
nika2105 [10]3 years ago
4 0

tn = 1-4n

t12 = 1-4*12

t12 = 1-48

t12 = -47



tn =1/2 n+3/2

t12 = 1/2 (12) + 3/2

t12 = 12/2 + 3/2

t12 = 15/2

t12 = 7 1/2




9,4,-1

a1=9

d = 4-9 =-5

an =a1+d(n-1)

-146 = 9 + -5(n-1)

subtract 9 from each side

-155= -5(n-1)

divide by -5

31 = n-1

add 1 to each side

n=32

the 32nd term is -146


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Rudiy27

Hello there!


5d = 17.1

The equation is asking you to find the value for "d". How to do that? Well, all you have to do is divide both side by 5.

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That's your answer!


You can even double check your work, if you want to. How? Well, you just need to replace 3.42 where it belongs.

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True!


Let me know if you have additional questions. As always, it is my pleasure to help students like you!

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