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
BartSMP [9]
2 years ago
5

Which sets of numbers represent geometric sequences? Check all that apply.

Mathematics
1 answer:
mart [117]2 years ago
8 0

Answer:

Geometric sequences are below in bold.

Step-by-step explanation:

First one is 2/5, 2/10, 2/20, 2/40

2/10 = 2/5 * 1/2 ; 2/20 = 2/10 * 1/2

This is geometric with common ratio 1/2.

Second is  11/12, 8/12, 5/12, 2/12

This is not geometric It is arithmetic with common difference  -3/12.

25, 19, 13, 7....     is arithmetic with d = -6

4, 12, 36, 108

12 = 3*4, 36 = 3*12   and so on

This is geometric with r = 3.

-5, 5, -5, 5,...

Each term is obtained from the prievious by multiplying by - 1. S

this is geometric with r = -1.

-3, 0, 3, 6 is arithmetic with d = 3.

-8, -2, 1/2, 1/8

This is not geometric as there is no common ratio.

You might be interested in
Help me find the answer
Galina-37 [17]

Answer:

d

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
A certain car model has a mean gas mileage of 34 miles per gallon (mpg) with a standard deviation A pizza delivery company buys
zubka84 [21]

Answer:

z =\frac{33.3- 34}{\frac{5}{\sqrt{54}}}= -1.028

z =\frac{34.3- 34}{\frac{5}{\sqrt{54}}}= 0.441

An we can use the normal standard table and the following difference and we got this result:

P(-1.028

Step-by-step explanation:

Assuming this statement to complete the problem "with a standard deviation 5 mpg"

We have the following info given:

\mu = 34 represent the mean

\sigma= 5 represent the deviation

We have a sample size of n = 54 and we want to find this probability:

P(33.3 < \bar X< 34.3)

And for this case since the sample size is large enough >30 we can apply the central limit theorem and then we can use this distribution:

\bar X \sim N(\mu , \frac{\sigma}{\sqrt{n}})

And we can use the z score formula given by:

z=\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And replacing we got:

z =\frac{33.3- 34}{\frac{5}{\sqrt{54}}}= -1.028

z =\frac{34.3- 34}{\frac{5}{\sqrt{54}}}= 0.441

An we can use the normal standard table and the following difference and we got this result:

P(-1.028

7 0
3 years ago
A density curve for all the possible temperatures between 0 degrees F and 40 degrees F is a rectangle. What is the height of the
Eddi Din [679]

Answer:

Concept: Higher Level Mathematics

  1. You have a density curve, aka probability
  2. You are asked to find the height
  3. Hence 0-40F has 40 total integers or values of X(probability)
  4. Hence you have a total Area of
  5. \binom{40}{0}
  6. Integrate f(x) to get 0.025.
  7. Hence the answer is A
  8. Rate positively and give brainlist

3 0
3 years ago
Read 2 more answers
Help!! PLease someone
lawyer [7]
It is 5 you just have to count
7 0
3 years ago
To find the height of a tower, a surveyor positions a transit the is 2 meters tall at a spot of 40 meters from the base of the t
Mrac [35]
The height of the tower roughly equals 41.421 meters.
5 0
3 years ago
Other questions:
  • What is 4 is to 3 as x is to 20
    7·1 answer
  • WILL GIVE BRAINLIEST!! A student government has 5 positions to fill and there are 9 candidates running for any one of the positi
    5·1 answer
  • What is the arc length if theta = 2pi / 3 and the radius is 4cm
    8·1 answer
  • Parallelogram L M N O is shown. Angle L is (x + 40) degrees and angle O is (3 x) degrees. What is the measure of angle O in para
    15·1 answer
  • Mike has a recipe that feeds one person that calls for 3/8 teaspoon of salt. How much salt is needed to make the recipe if he ne
    10·1 answer
  • Write an equation of the line that passes the points (-9,2) and is perpendicular to the line y=3x-12
    10·1 answer
  • What's the plotting points for two thirds
    12·1 answer
  • 10 points!!! Please help super easy. Just numbers 1 and 2!
    5·1 answer
  • Can someone please help me with these 4 questions?
    8·1 answer
  • What is the measure of CAD
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!