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
enyata [817]
4 years ago
15

A sequence is defined recursively using the formula f(n + 1) = -0.5f(n). If the first term of the sequence is 120, what is f(5)?

Mathematics
2 answers:
Dmitriy789 [7]4 years ago
5 0

Answer:

Third choice

Step-by-step explanation:

i just did it on edgen and got it right

PolarNik [594]4 years ago
3 0

Answer: 7.5

Step-by-step explanation:

The given formula tells us that the next term f(n+1) of the sequence is -0.5 times the previous term f(n)

First term of the sequence is f(1) = 120

Second term of the sequence is f(2) = f(1+1) = -0.5 f(1) = -0.5 (120) = -60

Third term of the sequence is f(3) = f(2+1) = -0.5 f(2) = -0.5 (-60) = 30

Fourth term of the sequence is f(4) = f(3+1) = -0.5 f(3) = -0.5 (30) = -15

Fifth term of the sequence is f(5) = f(4+1) = -0.5 f(4) = -0.5 (-15) = <em>7.5</em>

You might be interested in
Is the equation an example of growth or decay? y = 4x
Lynna [10]
Hello,

as 4>0 y=4x is a growing line.
8 0
3 years ago
Read 2 more answers
What is the exponential notation for 262,144
7nadin3 [17]

since there is always a decimal at the end of every value so :

           = 262144.0 

        you move the decimal backwards if there is no decimal between the value. you place the decimal after the 1st digit, you will also count the digits you have passed : 

         = 2.62144 X 10^5 

you passed 5 values so you put 5 in exponent form.


7 0
3 years ago
Read 2 more answers
Which graph represents the function f(x) = |x + 3|?
Sophie [7]
Answer: (B)
Explanation: If you are unsure about where to start, you could always plot some numbers down until you see a general pattern.

But a more intuitive way is to determine what happens during each transformation.
A regular y = |x| will have its vertex at the origin, because nothing is changed for a y = |x| graph. We have a ray that is reflected at the origin about the y-axis.

Now, let's explore the different transformations for an absolute value graph by taking a y = |x + h| graph.
What happens to the graph?
Well, we have shifted the graph -h units, just like a normal trigonometric, linear, or even parabolic graph. That is, we have shifted the graph h units to its negative side (to the left).

What about the y = |x| + h graph?
Well, like a parabola, we shift it h units upwards, and if h is negative, we shift it h units downwards.

So, if you understand what each transformation does, then you would be able to identify the changes in the shape's location.
6 0
4 years ago
Read 2 more answers
carly and rob combined their dvd collections. now they have 42 dvds in all carly had 4 more dvds than rob. how many dvds did car
mrs_skeptik [129]
So r+c=42 c=4+r subsitute c=4+r for r in r+c=42 r+4+r=42 add like terms 2r+4=42 subtract 4 from both sides 2r=38 divide both sides by 2 r=19 rob=19 subsitute r=19 for r in c=4+r c=19+4 carly=23
5 0
3 years ago
Read 2 more answers
Can you tell me how to do this in expanded from?
aleksandrvk [35]
16 x .50 x3x3x3 I believe that is it
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which item is more economical?
    8·1 answer
  • a courier earns a fixed amount for each package she delivers and yesterday her average hourly wage was $12.50 an hour if she wor
    14·2 answers
  • 12(6g + 2) = 12<br><br> A. 3.33<br><br> B. 1.67<br><br> C. 3.67<br><br> D. 4.3
    12·1 answer
  • X(x+3)-5(x+3)= can u help me with this math problem?
    10·1 answer
  • Name a three dimensional shape that cannot have a triangle as a two dimensional cross section.
    9·1 answer
  • The points (-1, r) and (2, 1) lie on a line with slope 2. Find the missing coordinate r
    15·2 answers
  • Please help, i will love you forever if you give me the answer
    12·1 answer
  • for every 5 red cars there are 8 black cars. If there are 24 more black cars than red cars how many total vehicles are there​
    15·1 answer
  • Pls help will give brainliest
    8·1 answer
  • What is the image of the point (2, 3) after a rotation of 180° counterclockwise about the origin?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!