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
Softa [21]
4 years ago
11

Find the third term in a geometric sequence if a = 8 and r = -1. Use the formula a(subscript n) = arⁿ⁻¹

Mathematics
1 answer:
deff fn [24]4 years ago
8 0

Answer:

a_{3} = 8

Step-by-step explanation:

=> a_{n} = ar^{n-1

Where n = 3, a = 8 and r = -1

=> a_{3} = (8)(-1)^{3-1}

=> a_{3} = (8)(1)

=> a_{3} = 8

You might be interested in
Determine the mixed number that correctly adds 3/5, 5/8, and 15/32
Vitek1552 [10]

Answer:

The answer of the addition of 3/5, 5/8 and 15/32 is 1/2

Step-by-step explanation:

3/5 + 5/8 + 15/32

We find the LCm of the denominators, that is, 5, 8 and 32

LCM = 5*32 = 160

[(160/5 + 3) + (160/8 + 5) + (160/32 + 15)]/160

[(32+3) + (20+5) + (5+15)]/160

[35+25+20]/160

80/160 = 1/2

7 0
3 years ago
One safe investment pays 10% per year, and a more risky investment pays 13% per year.
jonny [76]

Answer: 9,600 for the 10% account 10,500 for the 13% why they wouldn't want to put it in the same account is because risky investment for the 13

Step-by-step explanation:

4 0
3 years ago
The table shows the time it took a group of students to complete a puzzle
Studentka2010 [4]

Answer:

a. 17  b. 16/24

Step-by-step explanation:

a. Find the midpoints of each class interval which is:

7.5 x 2 = 15

12.5 x 9 = 112.5

17.5 x 5 = 87.5

22.5 x 5 = 112.5

27.5 x 3 = 82.5

Add all of these up to give 410

Add up the total of the frequency column which is 24

410 / 24 = 17.0833.....

Rounded to 2 significant figures, the answer is 17

b. Add together all the people under 20 which totals to 16 and put this over the total of 24 to give the fraction 16/24

5 0
3 years ago
Read 2 more answers
Which event is LEAST LIKELY to occur?
lisabon 2012 [21]
A because it’s the closet to 0!
5 0
3 years ago
PLS HELP ME ASAP FOR 3, 4, and 5 (SHOW WORK!!) + LOTS OF POINTS!
ValentinkaMS [17]
Number 3 is a because for every hour (x) the train travels 50 miles (y) so the total distance will be 50 times the number of hours (50x)
6 0
3 years ago
Read 2 more answers
Other questions:
  • Andy and Donald are both running toward the soccer ball during a game.
    14·1 answer
  • 3x - 6<br> _____<br> x - 2 ?????????
    8·1 answer
  • Express 8^1/2 in simplest radical form.
    5·1 answer
  • Divide -3x^3-2x^2-x-2 by x-2
    9·2 answers
  • How much is 4(-2x-3)
    10·2 answers
  • A freight carrier charges $0.57 for a package weighing up to one ounce plus and additional $0.32 for each additional ounce or fr
    9·1 answer
  • Use technology to obtain approximate solutions graphically. All solutions should be accurate to one decimal place. (Zoom in for
    6·1 answer
  • Which numbers are irrational? Select all that apply.
    11·1 answer
  • PLEASE HELP I mixed everything up and now I dont know!!
    6·2 answers
  • Find x and y<br> у<br> 60°<br> 16
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!