4 years ago

Find a formula for an for the arithmetic sequence.

Mathematics

1 answer:

Otrada [13]4 years ago

4 0

Answer:

$a_{n} = a + 2(n-1)$

Step-by-step explanation:

$a_{5}= a_{1} + 4d \\4 = -4 +4d\\8= 4d\\d= 2\\\\Therefore \\a_{n} = a_{1} + 2(n-1)$

You might be interested in

An object dropped from a height of 600 feet has a height, h(t), in feet after t seconds have elapsed, such that h(t) = 600 − 16t

Anni [7]

given h = 600 - 16t ( add 16t to both sides )

16t + h = 600 ( subtract h from both sides )

16t = 600 - h ( divide both sides by 16 )

t = $\frac{600-h}{16}$

when h = 400

t = $\frac{600-400}{16}$ = $\frac{200}{16}$ = 12.5 seconds

5 0

4 years ago

Read 2 more answers

Alice spins a spinner and rolls a number cube labeled 1-6. the spinner and number cube are shown.

Delicious77 [7]

Answer:

Step-by-step explanation:

first count up the numbers on the spinner and the die cut out the number till get the number but i will guess 2

8 0

3 years ago

Evaluate 7+q(r−8)2 when q = 3 and r = 10.

liberstina [14]

Answer:

The solution of the expression is 19.

Step-by-step explanation:

Given:

q = 3
r = 10

Work:

=> 7 + q(r − 8)2
=> 7 + 3(10 - 8)2
=> 7 + 6(10 - 8)
=> 7 + 6(2)
=> 7 + 12
=> 19

Hence, the solution of the expression is 19.

Hoped this helped.

$BrainiacUser1357$

8 0

3 years ago

Read 2 more answers

A word problem for -100 divided by 4

bagirrra123 [75]

Lisa owed 100 dollars, the person she owed it to decided she could pay her one quarter of it per month. If i need to answer the word problem as well, put it in the comments. and i'll add the answer

4 0

3 years ago

What is the total value of the goods and services produced in the nation in a year called?

Hoochie [10]

The total value of the goods and services produced in the nation in a year is called Gross National Product or Gross Domestic Product of that country

3 0

3 years ago

Read 2 more answers