Seudónimo Seudónimo

25-01-2021
Mathematics

contestada

Find the 77th term for each sequence(use the equation: an=a1+(n-1)d)
A)5,10,15,20,25...
B)17,14,11,8,5

Respuesta :

asmaNasr asmaNasr

26-01-2021

Step-by-step explanation:

[tex]an = a1 + (n - 1)d \\ d = a2 - a1 \\ a1 = 5 \\ a2 = 10 \\ d = 5 \\ an = 5 + (n - 1)5 \\ an = 5n \\ a77 = 5 \times 77 = 385[/tex]

For B

[tex]a1 = 17 \\ a2 = 14 \\ d = 14 - 17 = - 3 \\ an = 17 + (n - 1) \times - 3 \\ an = 17 - 3n + 3 \\ an = 20 - 3n \\ a77 = 20 - 3 \times 77 \\ a77 = - 211[/tex]

Answer Link

Otras preguntas

Based on the following data for the current year, determine the accounts receivable turnover. Net sales on account during the year $550,000 Cost of merchandise

Need help!!!! With # 7

find the slope of the the line graphed

80% is taken off and now its 3. What was it originally?

What is rhythm? OA. a kind of movement OB. a musical element OC. an instrument OD a type of concert

subtract this please

9. Jack has $5.90 in spare change in his pocket. All of the coins are nickels and quarters. If he has 50 coins total, how many of each coin does he have? (Use a

why were the Dakota Reservation and the Town of Mankato important locations during the War of 1862?

The largest diversity of plants and animals on the planet is found in one terrestrial biome.

When creating your budget, make sure the amounts (both income and expenses) a. are for the same time period. b. total to zero. c. create a negative balance. d.