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
JulsSmile [24]
3 years ago
15

Determine the domain of the function.

Mathematics
1 answer:
nydimaria [60]3 years ago
6 0
f(x)=\dfrac{4}{x^2}D:\ x^2\neq0\to x\neq0\\\\Answer:\ All\ real\ numbers\ except\ 0.
You might be interested in
Easy Geometry Riddle
Stella [2.4K]

Answer:

A postage stamp

Step-by-step explanation:

A postage stamp sits in the corner of an envelope, yet the envelope that it's on can travel around the world.

~theLocoCoco

3 0
3 years ago
Read 2 more answers
Let X denote the time from the present until the stock market hits 25,000. If X ≤ 1, you win $10, 000X. If X > 1, you win not
const2013 [10]

Answer: $6321

Step-by-step explanation:

Expected value is given as exactly what you might think it means intuitively, the return you can expect for some type of action.

The basic expected value formula is the probability of an event multiplied by the amount of times the event happens:(P(x) * n).

he formula for the Expected Value for a binomial random variable is:

P(x) * X.

X is the number of trials and P(x) is the probability of success.

The formula for calculating the Expected Value where there are multiple probabilities is:

E(X) = ∑X * P(X)

The equation is basically the same, but here you are adding the sum of all the gains multiplied by their individual probabilities instead of just one probability.

Calculating the expected value of winning as follows:

Given,

Fx= e^-x, x is greater or equal to 0

Now, P less than or equal to zero =

[-e^-x] ^1

e^-0 - e^-1

= 1 - e^-1

= 0.6321

and P(x>1) = 1-0.6321= 0.3679

Therefore,Let y= amount of winnings.

Based on the above given information,

y= $10000 0

P(y)= 0.6321 0.3679

The expected value of winning:

E(y) = ΣyP(y)

E(y) = 10000 × 0.6321 + 0 × 0.3679

E(y) = $6321

Therefore, the expected value of winning is $6321

5 0
3 years ago
Factor 2x^2-4x-30 completely
Elza [17]
2x² - 4x - 30
2(x²) - 2(4x) - 2(15)
2(x² - 4x - 15)
4 0
3 years ago
The value of a car is expected to decrease exponentially. Which formula can you use to predict the value of the car for a given
IgorLugansk [536]
Hey there!

When the value of something goes down over time- a house, a car, anything- it's called depreciation. 

It would be expressed as exponential decay. This is because the value is going down exponentially as stated in the problem. Additionally, when it decays, the growth factor is less than one, so the value steadily decreases.

Let's rule out our other options:

B) Half-Life. This doesn't work because it's usually used for radioactive decay, which is usually a steady decrease of radioactivity and material that divides by two, hence the word half. For example:

Day 0) Started with 10 grams of plutonium
Day 1) 5 grams
Day 2) 2.5 grams

And so on.

C) Compound Interest. Like simple interest, but compunds usually at a certain point - yearly, monthly, every ten years, and so on. But, this is used for interest, mostly in a bank account or if you have a loan. It doesn't exhibit depreciation, and therefore it's not used to predict car value.

D) Exponential Growth- Exponential growth does not work for one main reason - it grows. That would mean that the value of the car goes up- and unless it's an old and very expensive car, that wouldn't be the case.

Hope this helps!
5 0
3 years ago
Show the work for this problem <br> 6,408-4,239
shtirl [24]

Answer:2169

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • If ΔABC is similar to ΔDEF, the m∠A = 50°, and m∠E = 70°, what is m∠C?
    15·2 answers
  • Find the reciprocal of the number. Multiply to check your answer.
    7·2 answers
  • Where does the function f have a zero? (more than one can apply)
    5·1 answer
  • Find all solutions of sqrt(3)tan(3x) = 0
    12·1 answer
  • For one photography session, Dexter earns no less than $50, but no more than $100. Which inequality can be used to represent his
    7·2 answers
  • I need help solving this problem: -1/7c=21. Please help me and solve for c
    14·1 answer
  • The length of the rectangle is 5 m greater than the width. The perimeter is 150 m. Find the width and length.
    13·1 answer
  • In the image shown, line n is a transversal cutting parallel lines l and m. ∠1 = 3x + 18 ∠7 = 2x + 39 What is the measure of ∠7?
    14·2 answers
  • Indefy each step <br> x+13=24
    7·2 answers
  • Find the sum of first 100 even numbers.​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!