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Anarel [89]
3 years ago
9

Find the 91st term of the arithmetic sequence 28, 8, –12, ... Anybody know the answer?

Mathematics
1 answer:
tankabanditka [31]3 years ago
6 0

Answer:

-1772

Step-by-step explanation:

The nth term of an arithmetic sequence is expressed as;

Tn = a+(n-1)d

a is the first term

n is the number of terms

d is the common difference

From the sequence

a = 28

d = 8-28 = -12-8 = -20

n =91(since we are looking for the 91st term)

Substrate

T91 = 28+(91-1)(-20)

T91 = 28+90(-20)

T91 = 28-1800

T91 = -1772

Hence the 91st term is -1772

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Find the area and perimeter
spin [16.1K]

Answer:

area (A) =(9x+108)unit^2

perimeter (P) =(2x+42) units

Step-by-step explanation:

area(A) =length(l) × breadth(b)

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now, A=(x+12) × 9 units^2

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3 years ago
To be clear i don't want the flat out answer i want help on how to solve it .
liberstina [14]
The answer to the problem is as follows:

<span>So each thing separate by a positive, negative, multiplication or division sign. so here it would be 8h is one term and 15t is the second term so there are two.
</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
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What is a unit of area with dimensions 1 unit times 1 unit
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Step-by-step explanation:

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