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3 years ago

Find the 100th term in the arithmetic sequence -19,-14,-9,-4,1...

Mathematics

1 answer:

Alex73 [517]3 years ago

4 0

Answer:

476

Step-by-step explanation:

hello :

the common diference is : d = ( 1)-(-4)=(-4)-(-9)=(-9)-(-14)=(-14)-(-19)=5

the firt term is A1 = -19

the n-ieme term is : An = A1 +(n-1)d

An = -19+5(n-1)

An = 5n-24

the 100th term in the arithmetic sequence is : A100 = 5(100)-24 =476

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5 1/2 + 3 4/5 + 1 1/4 =

ratelena [41]

Answer:

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Step-by-step explanation:

$5\frac{1}{2} + 3\frac{4}{5} + 1\frac{1}{4}$

1.Find the LCM(Least Common Multiple).

That would be 20.

2.Multiply so all denominators are equal.

$5\frac{10}{20} + 3\frac{16}{20} + 1\frac{5}{20}$

3. Add

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4. Simplify

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3 years ago

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4 years ago

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3 years ago

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