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
Margarita [4]
3 years ago
5

If f(x)=3^ x-4 what is f(- 1) ?

Mathematics
2 answers:
musickatia [10]3 years ago
4 0

Answer:

1/243

Step-by-step explanation:

When you see this notation, it means plug in -1 for x in the function.

f(-1) = 3^((-1)-4)

f(-1) = 3^-5

f(-1) = 1/3^5

f(-1) = 1/243

n200080 [17]3 years ago
4 0

Step-by-step explanation:

substitute (-1)

{3}^{x}  - 4 \\  {3}^{ - 1}  - 4 =  \frac{1}{3}  - 4 =  -  \frac{11}{3}  =  - 3.667

You might be interested in
One kitty weighs 2 pounds 4 ounces. Another kitten weighs 2 ounces less. What is the combined weight of the two kittens in ounce
My name is Ann [436]
70 ounces because there are 16 ounces in a pound so 16 x2 equals 32 + 2ounces equals 36 - 2 equals 34 , 34 + 36 = 70 ounces in total .
3 0
3 years ago
What is the relationship among direct variation,lines,rates of change, and slope?
JulsSmile [24]
A direct variation is a proportional equation. Such as:

For every 3 cookies, linda gets 1 glass of milk. The equation for this is y=3x where y is the glasses and x is the cookies. this is a direct variation. It also has a linear line. Linear means straight. Rate of change and slope are the exact same thing. They are the value of 'm' in y=mx+b
5 0
3 years ago
If f(x)=x2-2x and g(x)=6x=4, for which value of x does (f+g)(x)=0
zhenek [66]
X = -2
hope it helps (: 
7 0
3 years ago
Read 2 more answers
In triangle ABC segment DE is parallel to the side AC. (The endpoints of segment DE lie on the sides AB and BC respectively).
ivanzaharov [21]

Answer:

6 dm

Step-by-step explanation:

Triangle DBE is similar to triangle ABC, so their side lengths are proportional.

DE/AC = DB/AB

The length of DB can be found from ...

DB +AD = AB

DB = AB -AD = (15 -10) dm = 5 dm

So, we can fill in the proportion:

DE/(18 dm) = (5 dm)/(15 dm)

DE = (18 dm)·(1/3) . . . . . . . . . . simplify, multiply by 18 dm

DE = 6 dm

_____

It can be helpful to draw and label a figure.

5 0
3 years ago
2. State if the following is an observational study, a survey, or an experiment, and give a reason for your answer.
omeli [17]

Answer:

If Ken wants to compare how many hours a week sixth graders spend doing mathematics homework to how many hours a week that eleventh graders spend doing mathematics  homework and randomly selects ten sixth graders and ten eleventh graders and records how many hours each student spent on mathematics homework in a certain week then this is an observational study.

Step-by-step explanation:

An observational study depends on the data set statistical analysis, researchers do not manipulate any variable to reach conclusions. They design question-measurement to collect information without trying to affect their answers.

A survey is part of an observational study  assessed on a sample population through controlled sample questions to collect specific data asking determined people and the response variable is the number of correct answers collected which are not influenced either.

In a controlled experiment, the researcher manipulates the sample population grouping people to assign them with some treatment or to do an specific task. Different groups are formed and assigned with different tasks to get the information wanted or to know proportion of the population in certain task.

8 0
3 years ago
Other questions:
  • I take another picture for question
    8·1 answer
  • What is negative 8 times negative 8
    13·2 answers
  • Hannah has 11 toothpicks that are the same length.Name the types of triangles and quadrilaterals Hannah can make if she uses onl
    8·2 answers
  • What is the motion of a marry go round?
    6·2 answers
  • The trigonometric form of a complex number is unique - True or false?
    6·1 answer
  • If || m, find the value of x.<br> (8r + 20)<br> (11 x - 31)
    14·1 answer
  • Pl help it’s for homework
    7·1 answer
  • Which of the following is a prime number?<br> A. 67<br> B. 65<br> C.63<br> D.60
    15·2 answers
  • I need help asap, I have school tomorrow and I have 4 math papers due and haven't done any of them
    8·2 answers
  • Pleaseee help me with THISS please
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!