3 years ago

Find a12 for the geometric sequence -4, -2, -1, -1/2, ...

Mathematics

1 answer:

coldgirl [10]3 years ago

8 0

9514 1404 393

Answer:

-1/512

Step-by-step explanation:

The first term is -4, and the common ratio is -2/-4 = 1/2. Then the n-th term is ...

an = -4·(1/2)^(n-1)

and the 12th term is ...

a12 = -4(1/2)^(12 -1) = -4/2048

a12 = -1/512

You might be interested in

PLZ HELP GIVEING BRAINLIST Adam borrowed $17 from his brother on Monday, and then an additional $5 on Tuesday. How much money wi

Serggg [28]

Answer:

Adam will have to pay $22

Step-by-step explanation:

Hope this helps :)

3 0

3 years ago

Read 2 more answers

Whats 20 percent of 22

katovenus [111]

20 percent of 22 is equal to 4.4.

6 0

4 years ago

Do the following lengths form a right triangle?

Solnce55 [7]

Answer:

Yes, they do

Step-by-step explanation:

Because

6+8=14>9

6+9=15>8

8+9=17>6

6 0

3 years ago

If x-y=10 and x+y=20 what is the answer for x^2-y^2?

Minchanka [31]

200 because 15 - 5 is 10 and 15+5 is 20. so 15 squared is 225 and 5 squared is 25 and 225-25 is 200

6 0

4 years ago

Claudia is making a gelatin dessert for a party. She plans on making 12 servings for every 5 people. If each pan Claudia uses to

just olya [345]

Answer:

Step-by-step explanation:

Key Word: 12 servings for every 5 people. if she makes it to hold 8 servings, what is enough plans she needs to feed 10 people?

formula: so 12 for 5 then 24 for 10.

solving problem:

12 people over 5 people = x over 10 people

since 5 times 2 equals 10 then 12 times is 24.. so we need 24 servings

we know from reading the question that each pan makes 8 servings.

$\frac{24}{8} = 3$

ANSWER : 3

6 0

3 years ago