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3 years ago

Find the sum of the first 20 terms of the arithmetic sequence 4, 10, 16, 22....

Mathematics

1 answer:

hammer [34]3 years ago

3 0

n = 20

d = 6

a = 4

L = a + (n - 1)*d

L = 4 + (20 - 1)*6

L = 4 + 19*6

L = 118

Sum = (a + L)*n/2

Sum = (4 + 118) * 20/2

Sum = 122 * 10

Sum = 1220

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Answer:

Step-by-step explanation:

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3 years ago

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Rufina [12.5K]

$\huge\textsf{Hey there!}$

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3 0

3 years ago

Read 2 more answers

3.452 × 100 =-------------

Lilit [14]

Answer:

345.2

Step-by-step explanation:

1: Move 3.452 to the end of the equation

(3.452 × 100) -> (3.452 × 100 = 3.452)

2: Since 100 has 2 zeros, move the decimal point 2 places to the right.

(3.452 × 100 = 3.452) -> (345.2)

Hope this helps!

7 0

3 years ago

Read 2 more answers

Kimi and Jordan are each working during the summer to earn money in addition to

cluponka [151]

Their earnings would be the same after 4 hours

Let the number of hours be x, and the weekly earning be y

So, the given parameters are:

Kimi

Earnings = $9 per hour
Weekly allowance = $8

So, the equation for Kimi's weekly earning is:

$y =9x + 8$

Jordan

Earnings = $7 per hour
Weekly allowance = $16

So, the equation for Jordan's weekly earning is:

$y = 7x + 16$

Equate both equations

$7x + 16 = 9x + 8$

Collect like terms

$9x - 7x = 16 - 8$

$2x =8$

Divide both sides by 2

$x =4$

Hence, their earnings would be the same after 4 hours

Read more about linear equations at:

brainly.com/question/13729904

7 0

2 years ago

Could really use some help

MrRissso [65]

Answer:
X= 114
I don’t know what y is labeling so I won’t be able to help there sorry

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2 years ago