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
Sindrei [870]
3 years ago
14

Which sequences are geometric? Check all that apply.

Mathematics
1 answer:
MatroZZZ [7]3 years ago
5 0

Answer:

The geometric sequences are:

16 , -8 , 4 , -2 , 1 ⇒ 2nd

-15 , -18 , -21.6 , -25.92 , -31.104, ........ ⇒ 3rd

625 , 125 , 25 , 5 , 1 , ........ ⇒ 5th

Step-by-step explanation:

In the geometric sequence there is a constant ratio between each two consecutive terms

Let us find which sequence has  a constant ratio between its consecutive terms

-2 , -4 , -6 , -8 , -10

∵ -4 ÷ -2 = 2

∵ -6 ÷ -4 = 1.5

- No constant ratio between the consecutive terms

∴ The sequence is not geometric

16 , -8 , 4 , -2 , 1

∵ -8 ÷ 16 = -0.5

∵ 4 ÷ -8 = -0.5

∵ -2 ÷ 4 = -0.5

∵ 1 ÷ -2 = -0.5

- There is a constant ratio -0.5 between the consecutive terms

∴ The sequence is geometric

-15 , -18 , -21.6 , -25.92 , -31.104, ........

∵ -18 ÷ -15 = 1.2

∵ -21.6 ÷ -18 = 1.2

∵ -25.92 ÷ -21.6 = 1.2

∵ 31.104 ÷ 25.92 = 1.2

- There is a constant ratio 1.2 between the consecutive terms

∴ The sequence is geometric

4 , 10.5 , 17 , 23.5 , 30, ......

∵ 10.5 ÷ 4 = 2.625

∵ 17 ÷ 10.5 = 1.619047619

- No constant ratio between the consecutive terms

∴ The sequence is not geometric

625 , 125 , 25 , 5 , 1 , ........

∵ 125 ÷ 625 = 0.2

∵ 25 ÷ 125 = 0.2

∵ 5 ÷ 25 = 0.2

∵ 1 ÷ 5 = 0.2

- There is a constant ratio 0.2 between the consecutive terms

∴ The sequence is geometric

You might be interested in
Solve for all values of c in simplest form.<br> |C – 21 |= 12
Rina8888 [55]

Answer:

33, 9

Step-by-step explanation:

I33-21I=12

I9-21I=

I-12I=12

Every SUM of an absolute value will always be positive!!

5 0
2 years ago
Juan is making a cake for his mom's birthday. For every three cups of
Vlad [161]

Answer:

44 teaspoons

Step-by-step explanation:

33 divided by 3 is 11 and 4 x 11 is 44 if juan used 4 teaspoons of sugar every 3 cups of flour then 3 goes into 33    11 times and 4 x 11= 44

4 0
2 years ago
Back Next
emmasim [6.3K]

Answer:

C

Step-by-step explanation:

✔️First, solve for r:

r/2 ≤ 3

Multiply both sides by 2

r/2 × 2 ≤ 3 × 2

r ≤ 6

This implies that possible value of r is equal to 6 or less than 6.

Graphing this on a number line, the line with a shaded circle, indicating that 6 is included, starts at 6 and points to the left.

This indicates that value of r ranges from 6 and below.

The graph is C.

7 0
3 years ago
Solve the equations in Parts A and B using inverse operations. Check your solutions. In your final answer, include all of your w
Ludmilka [50]
Part A:5=2x^2-x^2+13
5=x^2+13
0=x^2+13-5
0=x^2+8

Part B:5=2x^3-x^3+13
5=x^3+13
0=x^3+13-5
0=x^3+8
3 0
3 years ago
Read 2 more answers
Please help fast, thanks.
3241004551 [841]
I believe it is m < 5 I could be wrong sorry.
6 0
2 years ago
Other questions:
  • Help pls Which value is equivalent to the picture below,
    13·1 answer
  • What's the radius of a circle with an area of 64 square feet
    11·1 answer
  • Bryan is making balloon Arrangements he has 8 blue and 12 cream balloons what is the greatest amount of Arrangements he can make
    6·2 answers
  • What is four sevenths of 35?
    13·2 answers
  • A ball was kicked into the air from a balcony 20
    14·2 answers
  • What equation of the line that has a slope of -4 and passes through the point (-2,-5)? Answer ASAP!!
    13·1 answer
  • What number (n) must be inserted into the number 3n,85n for it to be divisible by 6?
    9·1 answer
  • Drag the tiles to the correct boxes to complete the pairs.
    13·1 answer
  • PLEASE HELP, I WILL GIVE YOU BRAINLIEST!
    5·2 answers
  • What is the difference? Complete the equation. -4 - 2 1/2
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!