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4 years ago

8

I need urgent help plz

1 answer:

Artemon [7]4 years ago

5 0

I think the answers a

hope this helps :)

(if you wouldn’t mind can you mark me brainliest?)

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Use the initial term and the recursive formula to find an explicit formula for the sequence an. Write your answer in simplest fo

Ipatiy [6.2K]

Answer:

$a_n = -11-14n$

Step-by-step explanation:

Given

$a_1 = -25$

$a_n = a_{n-1}-14$

Required

The explicit formula

First, calculate $a_2$

Set n=2; So:

$a_2 = a_{2-1}-14$

$a_2 = a_{1}-14$

Substitute -25 for $a_1$

$a_2 = -25-14$

$a_2 = -39$

Calculate the common difference (d)

$d = a_2 - a_1$

$d = -39 --25$

$d = -14$

So, the nth term is:

$a_n = a_1 + (n - 1)d$

$a_n = -25+ (n - 1)*-14$

Open bracket

$a_n = -25-14n + 14$

Collect like terms

$a_n = 14-25-14n$

$a_n = -11-14n$

4 0

3 years ago

Can anyone help please

Liula [17]

The answer is yes. The triangles are congruent.

I measured them with a ruler and they are the same length.

Hope this helped! c:

8 0

3 years ago

Read 2 more answers

The construction cost for this road ha been estimated at $135 per linear foot. (1 mile = 5280 ft).

Mamont248 [21]

T. Pitagora twice => new street = 2 $\sqrt{20}$ = 8.94 miles;
135*8.94 = 1206.9$;

8 0

4 years ago

Write two monomials whose greatest common factor is 4m

Sergeeva-Olga [200]

Stand by !
The next thing you will read in this block
will be two monomials whose greatest
common factor is 4m :

   68 x n p m q r y s
and
       124 a b g c f m t z
____________________________

And now . . .
Here are two more:

       8 m x
and
   12 k m

5 0

3 years ago

How do i find out a

drek231 [11]

Answer:

it must be

$\frac{c}{8\pi \: b}$

7 0

3 years ago