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IgorC [24]
3 years ago
11

Find the 40th term of the arithmetic sequence-2,1,4,7,10

Mathematics
2 answers:
klio [65]3 years ago
3 0
A40=a1 +(40-1)r
in this case r is 3 beceause -2+3 will be 1 etc
a40=-2 +39*3
lilavasa [31]3 years ago
3 0

Answer:

115

Step-by-step explanation:

The n th term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 2 and d = 10 - 7 = 7 - 4 = 3, thus

a_{40} = - 2 + (3 × 39) = - 2 + 117 = 115

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The perimeter of a regular pentagon is 200 centimeters. how long is each side?
brilliants [131]
X= length of each side in cm

Pentagon= 5 sides

Pentagon Perimeter= 5x
substitute the perimeter

200= 5x
divide both sides by 5

40cm= x


ANSWER: The length of each side of the pentagon is 40cm.

Hope this helps! :)
5 0
3 years ago
PLS HELP!!
irina [24]
$789.18 * 0.062 = $48.93
answer is <span>48.93 (first choice)</span>
8 0
3 years ago
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At dan's school,6 out of every 10 kids know how to swim. If there are 350 kids in his school,how many know how to swim?
Bogdan [553]
210 because if you multiply 10 by 35 to get 350 you have to multiply 6 by 35 then you get 210 


4 0
2 years ago
Read 2 more answers
Sum, difference, and product..help!
taurus [48]

The sum of the function will be (r – s)(x) = –2x² + x – 3, The difference of the function will be (r – s)(x) = –2x² + x – 3, and The product of the function will be (r × s)(x) = 2x³ – 6x².

The complete question is attached below.

<h3>What is Algebra?</h3>

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

The functions are given below.

r(x) = x – 3

s(x) = 2x²

The sum of the function will be

(r + s)(x) = x – 3 + 2x²

(r + s)(x) = 2x² + x – 3

The difference of the function will be

(r – s)(x) = (x – 3) – 2x²

(r – s)(x) = –2x² + x – 3

The product of the function will be

(r × s)(x) = (x – 3) (2x²)

(r × s)(x) = 2x³ – 6x²

More about the Algebra link is given below.

brainly.com/question/953809

#SPJ1

7 0
1 year ago
For question 10e I wrote my answer as t=19, is that correct?
garri49 [273]

Answer:

1/19

Step-by-step explanation:

3(7) -2 = 19, this would be g(7) but they want g^-1 (7) so you need the inverse of your answer:
1/19.

HOPE THIS HELPS & MAKES SENSE!!!

3 0
2 years ago
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