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
Nezavi [6.7K]
3 years ago
13

1) Find the 128th term for the sequence 9, 4, -1, -6, 11,...

Mathematics
1 answer:
Nikitich [7]3 years ago
5 0
To determine an nth term of an arithmetic sequence, we use the expression an = a1 + (n-1)d where a1 is the first term in the sequence, n is the number of the term in the sequence and d is the common difference. For a geometric sequence, it is expressed an = a1r^(n-1). We calculate as follows:

1. a128 = 9 + (128-1)(-5)
     a128 = -626

2. a97 = (-3)(-2)^(97-1)
    a97 = -2.377x10^29
You might be interested in
A restaurant has 26 tables in its dining room.it takes the waitstaff 10 minutes to clear and set 4 tables. At this rate,how long
Sunny_sXe [5.5K]

Answer:

well, its 10 for 4. so 8 is 20, 12 is 30, 16 is 40 20 is 50, and 24 is 1 hour, 2 tabels is half the time so 5 min... so it would take -1 hour and 5 min

Step-by-step explanation:

5 0
4 years ago
If y varies inversely as (x^2-2) and f(3)=1/8. Find f(-1/2)
ivanzaharov [21]

Answer:

Use vector arithmetic to simplify.

x^2−2+5f/2

Step-by-step explanation:

6 0
3 years ago
A carnival has a duck pond booth. You choose a rubber duck at random. The mark on the bottom of the duck tells you whether you w
kumpel [21]
Take the number of medium ducks and divide it by the overall number of ducks
13/65=.2
6 0
4 years ago
Read 2 more answers
What is the answer to this​
zubka84 [21]

Answer: C. 124

Step-by-step explanation:

In parallelograms, any two consecutive interior angles add to 180 degrees. CDA and BCD are consecutive interior angles. Since the measure of angle CDA is 56 and the sum of CDA and BCD equal 180, then to find the value of BCD, evaluate 180-56.

180 - 56 = 124

4 0
3 years ago
A statistician finds that the population P of a small developing country has been increasing at a rate of 3.65% annually. In 200
iren [92.7K]

Answer:

15.035 years

Step-by-step explanation:

The exponential function to calculate population growth is

P(t) = Poe^kt

P(t) = Population size after t years = 3.6 million

Po = Initial population size = 2.1 million

k = growth rate = 3.65% = 0.0365

t = time in years = ???

Hence:

3600000 = 2100000 × e ^0.0365t

Divide both sides by 2100000

3600000/2100000 = e^0.0365t

1.7142857143 = e^0.0365t

Find the log of both sides

Log 1.7142857143 = log (e^0.0365t)

Log 1.7142857143 /Log 0.0365 = t

t = 15.035 years

5 0
3 years ago
Other questions:
  • a person Can travel 120 miles in one direction. the return trip was accomplished at double the speed and took three hours less t
    12·1 answer
  • When constructing an inscribed hexagon, which step comes after constructing a circle?
    10·2 answers
  • Find the value of sec 19 degrees using your calculator<br> also what does 'sec' mean?
    14·2 answers
  • 3rd time posting this dont skip need help ASAP and pls hurry bc i dont have much time i will give 10 pts + brainliest
    15·1 answer
  • What is the slope of the function y= -1/2 x - 7?
    12·1 answer
  • PLEASE HELP
    14·1 answer
  • 12 Times 12 = 144 right?
    11·1 answer
  • The sum of two numbers is 200 and the two numbers are in a ratio of 4:6, what is the larger number.
    12·1 answer
  • Evaluate f(x) = 5(x-4) when x=10
    15·1 answer
  • HELP ASAPP 30 points!!!!!<br> Which number is rational?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!