Mathematics High School

Find the sum of the Arithmetic Series on the picture.

Find The Sum Of The Arithmetic Series On The Picture.

Answers

Answer 1

Answer:

Step-by-step explanation:

The sum of the sequence is the average of first and last terms times the number of terms.

(3n+4) for 3rd and 7th terms and the number of terms is 7-3+1=5 so

(13+25)5/2

38(5/2)

19(5)

95

Related Questions

a new computer comapny has its sales increasing by 3% each week. A second computer company has its sales decreasing by $100 each day. the first company had $500 in sales when the second company had $7000 in sales. after approximately how many weeks will the sales for the two companies be the same?
A. 9
B. 13
C. 49
D. 63

Answers

Answer:

49

Step-by-step explanation:

45/14=x/14 what is “x”

Answers

Answer:

45

Step-by-step explanation:

x=45, just get rid of the denominators when they're the same

At a competition 24 of the 40 members of a middle school band won a middle. What percentage of the of the band won a middle?

Answers

Answer:

60%

Step-by-step explanation: 24/40 equals .6. Multiply .6 by 100 to get your percentage, which equals 60%. hope this helps

8 less a number is less than or equal to 17

Answers

Answer:

less than

Step-by-step explanation:

8 is less than 17

Answer :n ≤ 25

Step-by-step explanation:

n - 8 ≤ 17

n - 8 (+8) ≤ 17 (+8)

n ≤ 25

n ≤ 25 is your answer

help me

What is the arithmetic of the following numbers? 3, 5, 6, 7, 9, 6, 8

Answers

Answer: sorry pressed the wrong button

Step-by-step explanation:

✅Mean:

➡️Sum of total numbers/Total numbers

3+5+6+7+9+6+8 / 7

44 / 7 = 6.285

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