Question

1.a1=-4;а5==8;d-? 2.a6=12;d=-3;a1-? 3.a1=4;an=-10;d=-7;n-?

Answer 1

Ответ: 1. d=3

2. a₁=27

3. n=3

Пошаговое объяснение:

aₙ=a₁+d(n-1)

1. a₅=a₁+d(5-1)=a₁+4d

4d=a₅-a₁=8-(-4)=12

d=12/4=3

2. a₆=a₁+5d

a₁=a₆-5d=12-(5*-3)=12+15=27

3. aₙ=a₁+d(n-1)

-10=4-7(n-1)

-10=4-7n+7

7n=11+10

n=21/7=3

Answer 2

Ответ:

ПошагОтвет: 1. d=3

2. a₁=27

3. n=3

Пошаговое объяснение:

aₙ=a₁+d(n-1)

1. a₅=a₁+d(5-1)=a₁+4d

4d=a₅-a₁=8-(-4)=12

d=12/4=3

2. a₆=a₁+5d

a₁=a₆-5d=12-(5*-3)=12+15=27

3. aₙ=a₁+d(n-1)

-10=4-7(n-1)

-10=4-7n+7

7n=11+10

n=21/7=3овое объяснение:

Answer 3

It appears that you have provided a set of equations, but there seem to be some errors and missing information. To provide meaningful answers, I need to understand the patterns and relationships in these equations. It seems like you are dealing with a sequence of variables 'a' and 'd,' but it's not clear what you are trying to ask or calculate.

Could you please clarify your question or provide more information about the patterns and relationships you're working with in these equations? This will help me provide a more accurate response.