001237980 001237980

01-12-2021
Mathematics

contestada

The second term of an arithmetic sequence is –5, and the third term is –20. What is the first term?

Respuesta :

jimrgrant1 jimrgrant1

01-12-2021

Answer:

a₁ = 10

Step-by-step explanation:

The common difference d is calculated as

d = a₃ - a₂ = - 20 - (- 5) = - 20 + 5 = - 15

Then

a₂ - a₁ = d , that is

- 5 - a₁ = - 15 ( add 5 to both sides )

- a₁ = - 10 ( multiply both sides by - 1 )

a₁ = 10

Answer Link

Otras preguntas

What’s the solution to -5x-y=21 when y is equal to 6+4x

which of the following is one effect storm waves have on a beach?

What is the largest divisor of 342 that is also a factor of 285?

Which of the following best describes the historical context of Alice Childress's play String? O A. Assassinations and civil unrest were common. O B. The Harlem

The electrons camed by NADPH are similar to a hot potato in that both A have a lot of energy and require a carrier to be transported, O B are used in cells and

what is goose flesh

What does brp stand for in medical abbreviation?

Explain how the power of the Court is balanced or limited.

The electrons camed by NADPH are similar to a hot potato in that both A have a lot of energy and require a carrier to be transported, O B are used in cells and

(ESSAY) How is Macbeth a play exploring the male identity? What representations of masculism or masculinity does the play put forward? What is Shakespeare attem