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alexandr1967 [171]

3 years ago

12

An Arithmetic series has 20 terms. The first term is -81. The sum of all the terms is -480. Use the arithmetic sum formula to fi

nd the last term

1 answer:

timama [110]3 years ago

4 0

Answer:

The last term is 33.

Step-by-step explanation:

Sn = (n/2)(a1 + L) where a1 = first term and L = the last.

So:

-480 = (20/2) ( -81 + L)

-480 = 10( L - 81)

L- 81 = -480 / 10 = -48

L = -48 + 81

L = 33.

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Murljashka [212]

Answer:

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Step-by-step explanation:

hope this helps

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2 years ago

What is "Find the product of 36 and 47" , It is an area model!- I-ready

12345 [234]

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Step-by-step explanation:

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3 years ago

WILL GIVE BRAINLIEST find the value of r (-4,8), (r,12), m=4/3 (show your work pls)

OLEGan [10]

Answer:

r = 13

Step-by-step explanation:

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7 0

2 years ago

Sahra is three times as old as her daughter. If the sum of their age is 32. what is the age of the daughter?

Andrews [41]

So Sahra is 3 times as old as her daugter. That means that the sum of their age is the daughters age times 4.
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8 0

3 years ago

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Percent error that is greater than 20% but less than 50%

NNADVOKAT [17]

Answer:

30 40 percent

Step-by-step explanation:

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3 years ago

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