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
mihalych1998 [28]
2 years ago
15

What is the value of the exponential function f (x)=2 times (1/3)^x when x= -2

Mathematics
1 answer:
frutty [35]2 years ago
5 0

Answer:

18

Step-by-step explanation:

f(x) = 2(1/3)^x

[x = -2]

f(-2) = 2(1/3)⁻²

= 2(9)

= 18

You might be interested in
A lie-detector works correctly with 80% probability when the person is lying, and with 90% probability when the person is not. A
muminat

Answer:

the time percentage is 17%

Step-by-step explanation:

The computation of the time percenatge in the case when the detector lie and done with the mistake is as follows:

L denotes the event  in which a person is lying.

NL denotes the event in which a person is not lying.

C denotes the event in which that lie detector works correctly

NC denotes the event in which  lie detector is not working correctly

Now

P(C|L) =0.8

And,

P(NC|L) is

=1 - .8

= 0.2

P(C|NL) =0.9

P(NC|NL) is

= 1 -.9

=.1

P(L) = 0.7

P(NL) is

= 1 - .7

= .3

Now

P(NC) =P(NC|L) × P(L) + P(NC|NL) × P(NL)

=. 2 × .7 + .1 ×.3

=. 14+.03

= 0.17

Hence, the time percentage is 17%

8 0
3 years ago
I the radius of a circle is x cm ,what is the length of circufernece?​
nordsb [41]

Answer:

44x/7

Step-by-step explanation:

Radius=r=xcm

Circumference=2πr

➜2πx

➜2×22/7×x

➜44/7×x

➜44x/7

4 0
3 years ago
What is the ratio of 500 students to 10 classrooms
wlad13 [49]

Answer:

500:10

Step-by-step explanation:

I think that is it, sorry I can't really remember I did ratios a long time ago.

6 0
3 years ago
Read 2 more answers
Help me please this is late
Fudgin [204]

To find explicit formulas, you need two things. The common difference and the first term.

For example, #18

The first term = -15

The common difference = -20 -(-15) = -20 + 15 = -5

y = A + B(n - 1)

A = our first term

B = our common difference

n = the term you want to find in the sequence.

Leta plug our numbers in from #18

y = -15 + -5(n - 1)

Let's find the 4th term in the sequence.

y = -15 + -5(4 - 1)

y = -15 + -5(3)

y = -15 + -15

y = -30

8 0
3 years ago
Let f(x)=6/5x−1/2. Describe the transformations from the graph of f to the graphs of g(x)=−f(x) and h(x)=f(−x).
aivan3 [116]

Answer:

g(x)=-6/5x+1/2

h(x)=-6/5x-1/2

Step-by-step explanation:

1).   g(x)=−f(x) ?

f(x)=6/5x−1/2

g(x)=−(6/5x−1/2)

<u>g(x)=-6/5x+1/2</u>

2). h(x)=f(−x) ?

f(-x)=6/5(-x)−1/2

f(-x)=-6/5x-1/2

h(x)=-6/5x-1/2

8 0
3 years ago
Other questions:
  • Use SOHCAHTOA for this. Work out 'm' in 3sf, I need the working out.
    13·1 answer
  • ?/48=7/8 what is the numerator
    9·2 answers
  • Find the probability that your friend is at least 20 minutes late
    5·1 answer
  • Use the properties of logarithms to write the following expression as one logarithm.
    13·1 answer
  • What is the surface area of the right rectangular prism?
    12·1 answer
  • Find the missing side of each triangle. i need help!!!
    13·1 answer
  • 2 questions i need help with thanks!
    8·1 answer
  • WILL GIVE BRAINLIEST!!
    15·2 answers
  • Using a table of values, what is an approximate solution of the given equation to the nearest quarter of a unit?
    15·2 answers
  • Marguerite answered 79% of the questions on her test correctly. What fraction of the questions did she answer correctly?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!