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
Black_prince [1.1K]
3 years ago
13

These tables represent an exponential function.Find the average rate of change for the interval from x=8 to x=9

Mathematics
1 answer:
GuDViN [60]3 years ago
6 0

Answer:

Option D. 13122 is the answer.

Step-by-step explanation:

As we can see from the table having interval and average rate of change, figures under average rate of change are forming a geometric sequence.

Sequence is 2, 6, 18 , 54, 162, 486.

and we have to find the average rate of change from x = 8 to x = 9, means we have to find 9th term of the given sequence.

Now we know that explicit formula of the sequence can be written as T_{n}=ar^{n-1}

where Tn is the nth term of the sequence.

a = first term

r = common ratio

n = number of the term

Now from this explicit formula we can find the 9th term of the sequence.

From the given table

a = 2, r = 3, n = 9

T_{9}=2.3^{9-1}=2.3^{8}

T9 = 13122

Therefore Option D. 13122 will be the answer.

You might be interested in
Lucy went for a drive in her new car. She drove for 3 hours at a speed of 37.5 miles per hour. For how many miles did she drive?
zimovet [89]

Answer:

She drove a 122.5 miles

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Money Flow  The rate of a continuous money flow starts at $1000 and increases exponentially at 5% per year for 4 years. Find the
77julia77 [94]

Answer:

Present value =  $4,122.4

Accumulated amount = $4,742

Step-by-step explanation:

Data provided in the question:

Amount at the Start of money flow = $1,000

Increase in amount is exponentially at the rate of 5% per year

Time = 4 years

Interest rate = 3.5%  compounded continuously

Now,

Accumulated Value of the money flow = 1000e^{0.05t}

The present value of the money flow = \int\limits^4_0 {1000e^{0.05t}(e^{-0.035t})} \, dt

= 1000\int\limits^4_0 {e^{0.015t}} \, dt

= 1000\left [\frac{e^{0.015t}}{0.015} \right ]_0^4

= 1000\times\left [\frac{e^{0.015(4)}}{0.015} -\frac{e^{0.015(0)}}{0.015} \right]

= 1000 × [70.7891 - 66.6667]

= $4,122.4

Accumulated interest = e^{rt}\int\limits^4_0 {1000e^{0.05t}(e^{-0.035t}} \, dt

= e^{0.035\times4}\times4,122.4

= $4,742

8 0
3 years ago
The diagram shows a right-angled triangle.
goldfiish [28.3K]

Answer:

Step-by-step explanation:

Ac²= AB²+ BC²

Ac²= 4²+15²= 16+225

Square both side

Ac = √241= 15.52cm

8 0
3 years ago
Gabriella swims 2 laps per minute. What is the associated rate? ___ minute per lap
Leokris [45]

Answer:

The answer is D.

Step-by-step explanation:

It is given that Gabriella swims 2 laps for 1 minute. So in order to find how many minutes did he swim for each lap, you have to divide it by 2 :

2 laps = 1 minute

2 laps ÷ 2 = 1 minute ÷ 2

1 lap = 1/2 minute

= 30 seconds

Test :

Gabriella swim 1/2 min per lap. So if he swim 2 laps, you have to multiply it by 2 :

1/2 × 2 = 1 minute

7 0
3 years ago
Read 2 more answers
Whats is the 39th triangular number
aleksandr82 [10.1K]

Answer:

The 39th triangle number is 780

7 0
3 years ago
Other questions:
  • PLEASE HELP!!!!!!! MMMMMMMMEEEEEEEEEEEEEEE
    13·2 answers
  • Lenny and Lisa have obtained a 30-year, fixed rate mortgage for $675,250 with a 7.25% interest rate. They purchased 3 points and
    9·1 answer
  • Thor and Zeus strike with their hammers. The higher they raise their hammers before they strike, the louder the sound of the str
    8·1 answer
  • Help the photo is right there!
    13·2 answers
  • A restaurant is 60 miles away Hannah drives 3/5 and hi drives 5/6 who has driven farther and how many miles dies each still need
    10·1 answer
  • This should be easy its a trigonometry question in geometry
    10·1 answer
  • The perimeter of a rectangular plot of land is 250 meters if the. Length of one side of the plot is 40 meters what is the area o
    8·1 answer
  • A car travels 200 miles using 8 gallons of gasoline. What's the unit rate in miles per gallon? Please write
    14·2 answers
  • HELP 10 points !!!!!!!
    13·2 answers
  • In the rectangular trapezoid ABCD AC is driven by a CD (see figure).
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!