1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kvasek [131]
3 years ago
12

Write the explicit formula that represents the geometric sequence -2, 8, -32, 128

Mathematics
1 answer:
lora16 [44]3 years ago
7 0
a_{1}=-2 \\  \\ a_{2}=8 \\  \\ q= \frac{a_{2}}{a_{1}}  \\  \\ q= \frac{8}{-2}=-4 \\  \\ a_{n}=a_{1}*q^{n-1} \\  \\ a_{n}=-2*-4^{n-1}
You might be interested in
Y varies directly as x . If y is 2 when x is 8, then the constant of variation is 1/4 . True or False
dedylja [7]

When y = 2, x = 8.

This can be written as: 2/8.

Simplified: 1/4

True


3 0
3 years ago
Read 2 more answers
Montraie has a coin collection. He keeps 10 of the coins in his box, which is 20% of the collection. How many total coins are in
jek_recluse [69]

By definition of percentages, we conclude that Montraie has 10 coins saved in his box that come from a collection with a total of 50 coins.

<h3>How to calculate the quantity of coins in a collection</h3>

In this question we know the quantity of coins in a box and such coins are part of the <em>coin</em> collection. By definition of percentage we have the <em>total</em> quantity of coins in the collection:

x = 10*(100/20)

x = 50

By definition of percentages, we conclude that Montraie has 10 coins saved in his box that come from a collection with a total of 50 coins.

To learn more on percentages: brainly.com/question/13450942

#SPJ1

4 0
2 years ago
Find the length of the variable .
ira [324]
DONT CLICK THE LINK!!!

THEY WILL FIND YOU ADDRESS

I REPEAT DONT CLICK THE LINK!!!!!!
5 0
3 years ago
How many words can be formed by using the W,X,Y,Z if repetitions is not allowed?
Setler [38]

Answer:

24

Step-by-step explanation:

What you have here is a permutation, seeing as each element can only be used once.

We have 4 letters initially, so we can choose any 1 as our first letter. We have 4 choices for our first letter

However, once we choose our first letter, we can't use it anymore, so, for our second letter, we can only choose from the remaining 3 letters.

Furthermore, once we choose our second letter, we can only choose our 3rd letter from the remaining two letters we didn't choose yet.

Finally, our last letter will always be the one we didn't choose the last 3 times. So there is only one choice here.

Going off of this, we have four choices for the 1st letter, three choices for the 2nd letter, two choices for the 3rd letter, and one choice for the 4th letter

The way to calculate how many permutations we have without repetition is using factorials

N!

Where N is the number of elements you have.

In this case, it would be 4!

4! is 4 * 3 * 2 * 1

Which equals 24

If you notice, each number in 4! is the number of options we have for each choice. 4, then 3, and so on

5 0
3 years ago
Convert 3 quarts to pints
ss7ja [257]

Answer:

6 pints

Step-by-step explanation:

There are two pints in a quart, so there are 2 times 3 pints in three quarts.

Hope this helps!

4 0
3 years ago
Read 2 more answers
Other questions:
  • Is the result of Double 5 and add 1 the same as the result of Add 1 to 5; then double the result?
    7·1 answer
  • How long is the storage unit<br><br><br> This is Pythagorean theorem
    9·1 answer
  • Find the surface area
    12·1 answer
  • Tony bought 3 packs of pencils for $4 each and a pencil box for $7. Mario bought 4 binders for $6 each and used a coupon for $6
    7·1 answer
  • Write a description of the three different possibilities that may occur when graphing a system of two linear equations.
    8·1 answer
  • A 13tf.ladder is leaning against the house. The top of the ladder touches the house at 10 feet above the ground.How far away is
    12·1 answer
  • 50 POINTS. A ball is thrown into the air from a height of 4 feet at time t = 0. The function that models this situation is h(t)=
    9·2 answers
  • SOMEONE ANWSER QUICK !
    9·1 answer
  • Evaluate the root without using a calculator, or note that the root isn't a real number.
    10·1 answer
  • Answer the questions below. write your pairs in the form of X,Y without quotes
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!