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
Alborosie
2 years ago
9

If f(1) = 160 and f(n + 1) = –2f(n), what is f(4)?

Mathematics
2 answers:
lions [1.4K]2 years ago
5 0

Answer:

-1280

Step-by-step explanation:

There are 2 ways you could do this. You could just do the question until you come to the end of f(4). That is likely the simplest way to do it.

f(1) = 160

f(2) = - 2 * f(1)

f(2) = -2*160

f(2) = -320

f(3) = -2 * f(2)

f(3) = -2 * - 320

f(3) = 640

f(4) = - 2 * f(3)

f(4) = - 2 * 640

f(4) = - 1280

I don't know that you could do this explicitly with any real confidence.

Gre4nikov [31]2 years ago
3 0

f(1)=160\\f(n+1)=-2f(n)\\\\f(2)=-2\cdot 160=-320\\f(3)=-2\cdot(-320)=640\\f(4)=-2\cdot 640=-1280

You might be interested in
I need help with all
aev [14]

Answer:

for Question 2 its 2/7

Step-by-step explanation:

4 0
2 years ago
The graph shows that you are traveling at a constant rate. Three of the statements are true. Which is NOT?
Bess [88]

Answer:

Your speed is 135 miles per hour.

Step-by-step explanation:

Mark me brainliest if I helped:D

7 0
3 years ago
I need help again, as quickly as possible.
mestny [16]

Answer:

{ \tt{ \frac{1}{x}  +  \frac{1}{3}  <  \frac{1}{5} }} \\  \\ { \tt{ \frac{1}{x}   >   -  \frac{2}{15} }} \\  \\ { \tt{x >   - \frac{15}{2} }} \\  \\ { \bf{ -  \frac{15}{2} < x < 0 }}

5 0
2 years ago
Find the volume of a rectangular pyramid with the following dimensions.
PolarNik [594]

Answer:

B

Step-by-step explanation:

like my answer please gimme the brain

3 0
3 years ago
84×3=3×84 is what property
Katarina [22]
My property ..............................
6 0
3 years ago
Other questions:
  • The profits for a business can be represented as a function p(x)=110+25x for the month of January and q(x)=15x+85 for the month
    15·2 answers
  • If the mean of 4,8 and x is 7 what is the value of x
    11·1 answer
  • Terry mesured an angle with a protractor she aligned one side with the bottom of the protractor. the other side passes through t
    15·1 answer
  • Eleven members of the Middle School Math Club each paid the same amount for a guest speaker to talk about problem solving at the
    11·1 answer
  • Help me quick please?!
    11·2 answers
  • HELP ILL GIVE BRAINLIEST
    5·2 answers
  • Find the shaded AREA​
    10·1 answer
  • Can someone please help me with this!! it late and need to turn it in​
    6·1 answer
  • The parks department is creating a walkway to run through a park. The park, in the shape of a square, measures 300 feet on each
    7·1 answer
  • I just need the answers plz :)
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!