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
Marina86 [1]
3 years ago
12

What is the value of the fourth term in a geometric sequence for which a1 = 30 and r= 1/2

Mathematics
1 answer:
Tcecarenko [31]3 years ago
6 0

Answer:

3¾

Step-by-step explanation:

Geometric sequence also known as geometric progression, can be said to be a sequence with a constant ratio between the terms.

Formula for geometric sequence:

a^n = a ( n-1 ) * r

Given:

First term, a1 = 30

ratio, r = ½

Required:

Find the fourth term

Where, the first term, a¹ = 30

Second term: a² = 30 * ½ = 15

Third term: a³ = 15 * ½ = 7.5

Fourth term: a⁴ = 7.5 * ½ = 3.75 = 3¾

Therfore the fourth term of the geometric sequence is 3¾

You might be interested in
Juan has $10. He recently got a job and now makes $9.15 an hour. He now has $760.30. How many hours has he worked?
marissa [1.9K]

Im not sure if im correct but I think the answer is 82 hours.

6 0
2 years ago
Read 2 more answers
chris runs 2.3 miles every day of the week, except sunday. on sunday he only runs 2 miles. how many miles will he run in 2 weeks
Ludmilka [50]

Answer:

He will run 31.6 miles in two weeks.

Step-by-step explanation:

6 days a week = 2.3 miles

6 days · 2 weeks = 12 days total running 2.3 miles

1 day a week = 2 miles

1 day · 2 weeks = 2 days total running 2 miles

(12 · 2.3) + (2 · 2)

27.6 + 4

31.6 miles

7 0
3 years ago
A school survey reported that
kozerog [31]

The probability that the student has  a part-time job, given that they  have a cell phone is 5/8

<h3>What is probability</h3>

Probability is the likelihood or chance that an event will occur.

Given the following parameter:

  • Total student = 80%
  • Part-time jobs = 45%
  • Those with both a cell phone  and a part-time job = 30%

Student will cellphone only = 80 - 30 = 50%

The probability that the student has  a part-time job, given that they  have a cell phone is 50/80 = 5/8

Learn more on probability here: brainly.com/question/25870256

6 0
2 years ago
Describe the symmetry of these functions
Oduvanchick [21]
If it was line symmetry it would need to repeat the same shape twice, which the first follows but the second doesn’t.
if it was rotational, you would need to be able to take the shape in the top right and rotate it counterclockwise or clockwise to get the shape that locks in place. that doesn’t follow that.
both line and rotational symmetry is incorrect because the first example would need to lock up inside the right side of that example.

the answer is C
5 0
3 years ago
Read 2 more answers
Find the area of the blue sector of the circle. Round to the nearest hundredth.
Varvara68 [4.7K]
A diagram must be associated with the question above. Based on what I researched, this is what I got.

The blue sector of the circle is 120 degrees.

area of the blue sector = 1/3  of pi * 2^2
                                     = 4.19cm2

I hope this answer helps.
8 0
3 years ago
Other questions:
  • What is the solution to the inequality 3t+&gt;15
    6·2 answers
  • In this rectangular box, E F = 16, FD = 5, and DB = 30. Find A F.
    9·1 answer
  • When my age is divided by 3, the remainder is 1. When my age is divided by 5, the remainder is 3. When my age is divided by 7, t
    14·1 answer
  • Compute the total cost per year of the following pair of expenses. Then complete the sentence: On an annual basis, the first set
    7·1 answer
  • Evaluate a−3.45+b for:<br><br><br> a=1.32 and b=−10.3
    7·1 answer
  • What’s the answer lol
    11·2 answers
  • PLEASE HELP ILL GIVE BRAINLIEST<br> PLEASE SHOW WORK
    5·1 answer
  • Help me out with this math problem for 50 points!!!
    10·2 answers
  • What is the median in this list
    6·1 answer
  • Help I'm confused with this question​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!